I am reading the change log of the new Android N preview. There is something interesting about locales:
Along with multi-locale support, Android N also expands the range of languages available to users. It offers more than 25 variants each for commonly used languages such as English, Spanish, French, and Arabic. It also adds partial support for more than 100 new languages.
Source: https://developer.android.com/preview/api-overview.html#multi-locale_languages
Did you guys found a list of those 100 new languages?
I executed the code references from Chris on Android-N and got this list of new languages:
af_NA [Afrikaans (Namibia)]
agq_CM [Aghem (Cameroon)]
ak_ [Akan]
ak_GH [Akan (Ghana)]
am_ [Amharic]
ar_ [Arabic]
ar_001 [Arabic (World)]
ar_BH [Arabic (Bahrain)]
ar_DJ [Arabic (Djibouti)]
ar_EG [Arabic (Egypt)]
ar_EH [Arabic (Western Sahara)]
ar_ER [Arabic (Eritrea)]
ar_IQ [Arabic (Iraq)]
ar_KW [Arabic (Kuwait)]
ar_LB [Arabic (Lebanon)]
ar_MR [Arabic (Mauritania)]
ar_OM [Arabic (Oman)]
ar_PS [Arabic (Palestine)]
ar_SA [Arabic (Saudi Arabia)]
ar_SD [Arabic (Sudan)]
ar_SY [Arabic (Syria)]
ar_TD [Arabic (Chad)]
ar_YE [Arabic (Yemen)]
as_ [Assamese]
as_IN [Assamese (India)]
asa_TZ [Asu (Tanzania)]
az_ [Azerbaijani (Latin)]
az_ [Azerbaijani]
az_AZ [Azerbaijani (Cyrillic,Azerbaijan)]
az_AZ [Azerbaijani (Latin,Azerbaijan)]
bas_ [Basaa]
be_ [Belarusian]
bem_ZM [Bemba (Zambia)]
bez_TZ [Bena (Tanzania)]
bg_BG [Bulgarian (Bulgaria)]
bn_BD [Bengali (Bangladesh)]
bo_ [Tibetan]
bo_CN [Tibetan (China)]
bo_IN [Tibetan (India)]
br_ [Breton]
brx_ [Bodo]
bs_ [Bosnian (Latin)]
bs_ [Bosnian]
bs_BA [Bosnian (Cyrillic,Bosnia & Herzegovina)]
ca_IT [Catalan (Italy)]
ce_RU [Chechen (Russia)]
cgg_ [Chiga]
chr_ [Cherokee]
chr_US [Cherokee (United States)]
cs_ [Czech]
cy_ [Welsh]
cy_GB [Welsh (United Kingdom)]
da_DK [Danish (Denmark)]
da_GL [Danish (Greenland)]
dav_ [Taita]
dav_KE [Taita (Kenya)]
de_AT [German (Austria)]
de_BE [German (Belgium)]
de_CH [German (Switzerland)]
de_DE [German (Germany)]
de_LI [German (Liechtenstein)]
dje_ [Zarma]
dua_ [Duala]
dyo_ [Jola-Fonyi]
dyo_SN [Jola-Fonyi (Senegal)]
dz_ [Dzongkha]
ebu_ [Embu]
ebu_KE [Embu (Kenya)]
ee_ [Ewe]
ee_GH [Ewe (Ghana)]
el_ [Greek]
el_CY [Greek (Cyprus)]
en_ [English]
en_001 [English (World)]
en_150 [English (Europe)]
en_AS [English (American Samoa)]
en_AU [English (Australia)]
en_BB [English (Barbados)]
en_BI [English (Burundi)]
en_BS [English (Bahamas)]
en_BW [English (Botswana)]
en_BZ [English (Belize)]
en_CX [English (Christmas Island)]
en_DE [English (Germany)]
en_DG [English (Diego Garcia)]
en_DK [English (Denmark)]
en_DM [English (Dominica)]
en_FI [English (Finland)]
en_FM [English (Micronesia)]
en_GB [English (United Kingdom)]
en_GD [English (Grenada)]
en_GG [English (Guernsey)]
en_GH [English (Ghana)]
en_GI [English (Gibraltar)]
en_GU [English (Guam)]
en_GY [English (Guyana)]
en_IL [English (Israel)]
en_IM [English (Isle of Man)]
en_IN [English (India)]
en_IO [English (British Indian Ocean Territory)]
en_KE [English (Kenya)]
en_KY [English (Cayman Islands)]
en_LS [English (Lesotho)]
en_MO [English (Macau)]
en_MP [English (Northern Mariana Islands)]
en_MU [English (Mauritius)]
en_MW [English (Malawi)]
en_MY [English (Malaysia)]
en_NA [English (Namibia)]
en_NF [English (Norfolk Island)]
en_NR [English (Nauru)]
en_NZ [English (New Zealand)]
en_PG [English (Papua New Guinea)]
en_PH [English (Philippines)]
en_PK [English (Pakistan)]
en_PW [English (Palau)]
en_RW [English (Rwanda)]
en_SB [English (Solomon Islands)]
en_SC [English (Seychelles)]
en_SE [English (Sweden)]
en_SH [English (St. Helena)]
en_SI [English (Slovenia)]
en_SS [English (South Sudan)]
en_SX [English (Sint Maarten)]
en_SZ [English (Swaziland)]
en_TK [English (Tokelau)]
en_TT [English (Trinidad & Tobago)]
en_TV [English (Tuvalu)]
en_TZ [English (Tanzania)]
en_UM [English (U.S. Outlying Islands)]
en_VC [English (St. Vincent & Grenadines)]
en_WS [English (Samoa)]
en_ZM [English (Zambia)]
en_ZW [English (Zimbabwe)]
es_BO [Spanish (Bolivia)]
es_CL [Spanish (Chile)]
es_CO [Spanish (Colombia)]
es_DO [Spanish (Dominican Republic)]
es_ES [Spanish (Spain)]
es_GT [Spanish (Guatemala)]
es_IC [Spanish (Canary Islands)]
es_MX [Spanish (Mexico)]
es_NI [Spanish (Nicaragua)]
es_PA [Spanish (Panama)]
es_PE [Spanish (Peru)]
es_PH [Spanish (Philippines)]
es_PR [Spanish (Puerto Rico)]
es_PY [Spanish (Paraguay)]
es_US [Spanish (United States)]
es_UY [Spanish (Uruguay)]
et_ [Estonian]
et_EE [Estonian (Estonia)]
eu_ [Basque]
eu_ES [Basque (Spain)]
ewo_ [Ewondo]
ewo_CM [Ewondo (Cameroon)]
fa_ [Persian]
fa_AF [Persian (Afghanistan)]
fa_IR [Persian (Iran)]
ff_ [Fulah]
ff_CM [Fulah (Cameroon)]
ff_GN [Fulah (Guinea)]
ff_MR [Fulah (Mauritania)]
ff_SN [Fulah (Senegal)]
fi_ [Finnish]
fi_FI [Finnish (Finland)]
fil_ [Filipino]
fil_PH [Filipino (Philippines)]
fo_ [Faroese]
fo_DK [Faroese (Denmark)]
fo_FO [Faroese (Faroe Islands)]
fr_BE [French (Belgium)]
fr_BF [French (Burkina Faso)]
fr_BL [French (St. Barthélemy)]
fr_CA [French (Canada)]
fr_CD [French (Congo (DRC))]
fr_CF [French (Central African Republic)]
fr_CG [French (Congo (Republic))]
fr_CH [French (Switzerland)]
fr_CM [French (Cameroon)]
fr_DJ [French (Djibouti)]
fr_DZ [French (Algeria)]
fr_FR [French (France)]
fr_GF [French (French Guiana)]
fr_GQ [French (Equatorial Guinea)]
fr_HT [French (Haiti)]
fr_MA [French (Morocco)]
fr_MC [French (Monaco)]
fr_MF [French (St. Martin)]
fr_MG [French (Madagascar)]
fr_ML [French (Mali)]
fr_MQ [French (Martinique)]
fr_MR [French (Mauritania)]
fr_MU [French (Mauritius)]
fr_NC [French (New Caledonia)]
fr_NE [French (Niger)]
fr_PM [French (St. Pierre & Miquelon)]
fr_RE [French (Réunion)]
fr_RW [French (Rwanda)]
fr_SN [French (Senegal)]
fr_YT [French (Mayotte)]
fy_ [Western Frisian]
ha_ [Hausa]
ha_GH [Hausa (Ghana)]
ha_NE [Hausa (Niger)]
hi_ [Hindi]
hr_ [Croatian]
hr_HR [Croatian (Croatia)]
hu_ [Hungarian]
hy_ [Armenian]
hy_AM [Armenian (Armenia)]
in_ [Indonesian]
in_ID [Indonesian (Indonesia)]
iw_ [Hebrew]
ja_ [Japanese]
ja_JP [Japanese (Japan)]
kab_DZ [Kabyle (Algeria)]
kde_TZ [Makonde (Tanzania)]
kk_ [Kazakh]
kk_KZ [Kazakh (Kazakhstan)]
kl_ [Kalaallisut]
kln_KE [Kalenjin (Kenya)]
km_KH [Khmer (Cambodia)]
kn_ [Kannada]
kok_ [Konkani]
ks_ [Kashmiri]
ks_IN [Kashmiri (India)]
ksb_TZ [Shambala (Tanzania)]
ksf_ [Bafia]
ksf_CM [Bafia (Cameroon)]
ksh_ [Colognian]
ksh_DE [Colognian (Germany)]
ky_KG [Kyrgyz (Kyrgyzstan)]
lag_ [Langi]
lg_ [Ganda]
lkt_US [Lakota (United States)]
ln_ [Lingala]
ln_AO [Lingala (Angola)]
lo_LA [Lao (Laos)]
lrc_ [Northern Luri]
lrc_IQ [Northern Luri (Iraq)]
lrc_IR [Northern Luri (Iran)]
lt_ [Lithuanian]
lt_LT [Lithuanian (Lithuania)]
lu_ [Luba-Katanga]
luo_ [Luo]
luy_KE [Luyia (Kenya)]
mer_ [Meru]
mfe_ [Morisyen]
mgh_ [Makhuwa-Meetto]
mk_ [Macedonian]
mn_ [Mongolian]
ms_SG [Malay (Singapore)]
mua_ [Mundang]
mua_CM [Mundang (Cameroon)]
my_MM [Burmese (Myanmar (Burma))]
naq_ [Nama]
nb_SJ [Norwegian Bokmål (Svalbard & Jan Mayen)]
nl_BQ [Dutch (Caribbean Netherlands)]
nl_CW [Dutch (Curaçao)]
nl_SR [Dutch (Suriname)]
nl_SX [Dutch (Sint Maarten)]
nnh_CM [Ngiemboon (Cameroon)]
nus_SS [Nuer (South Sudan)]
nyn_UG [Nyankole (Uganda)]
or_IN [Oriya (India)]
os_RU [Ossetic (Russia)]
pa_ [Punjabi (Gurmukhi)]
pl_ [Polish]
ps_AF [Pashto (Afghanistan)]
pt_ [Portuguese]
pt_PT [Portuguese (Portugal)]
qu_EC [Quechua (Ecuador)]
rm_ [Romansh]
rn_ [Rundi]
ro_ [Romanian]
rof_ [Rombo]
rof_TZ [Rombo (Tanzania)]
ru_ [Russian]
ru_KZ [Russian (Kazakhstan)]
ru_RU [Russian (Russia)]
rw_ [Kinyarwanda]
rwk_ [Rwa]
sah_RU [Sakha (Russia)]
se_SE [Northern Sami (Sweden)]
seh_ [Sena]
seh_MZ [Sena (Mozambique)]
sk_SK [Slovak (Slovakia)]
sl_SI [Slovenian (Slovenia)]
smn_FI [Inari Sami (Finland)]
sn_ZW [Shona (Zimbabwe)]
so_DJ [Somali (Djibouti)]
so_ET [Somali (Ethiopia)]
so_KE [Somali (Kenya)]
so_SO [Somali (Somalia)]
sq_MK [Albanian (Macedonia (FYROM))]
sr_BA [Serbian (Cyrillic,Bosnia & Herzegovina)]
sr_ME [Serbian (Latin,Montenegro)]
sr_RS [Serbian (Latin,Serbia)]
sr_XK [Serbian (Cyrillic,Kosovo)]
sv_ [Swedish]
sv_AX [Swedish (Åland Islands)]
sv_FI [Swedish (Finland)]
sw_ [Swahili]
sw_TZ [Swahili (Tanzania)]
ta_ [Tamil]
teo_ [Teso]
teo_KE [Teso (Kenya)]
th_ [Thai]
th_TH [Thai (Thailand)]
to_ [Tongan]
twq_ [Tasawaq]
twq_NE [Tasawaq (Niger)]
uk_UA [Ukrainian (Ukraine)]
ur_PK [Urdu (Pakistan)]
uz_ [Uzbek (Cyrillic)]
uz_UZ [Uzbek (Cyrillic,Uzbekistan)]
vai_ [Vai]
vai_LR [Vai (Vai,Liberia)]
wae_ [Walser]
xog_UG [Soga (Uganda)]
yav_ [Yangben]
yo_BJ [Yoruba (Benin)]
zh_HK [Chinese (Simplified Han,Hong Kong)]
zh_HK [Chinese (Traditional Han,Hong Kong)]
zh_MO [Chinese (Simplified Han,Macau)]
zh_MO [Chinese (Traditional Han,Macau)]
Good news for Cologne, the apps can been translated to Kölsch (ksh_DE [Colognian])