Is NEOS working like TYPO3 CMS (FLUID/EXTBASE) just with another layout ? Can u add the same extension to NEOS and can u still make our own Backend Layouts ?
TYPO3 Neos is a completely new software, based on TYPO3 Flow. Conversion of extensions from Extbase to Flow/Neos should not be too hard, but you can't use the same code.