Is it expected (or what is the likelihood) that newly produced Android devices to not have GLES 3.2 support? We're developing children apps so we're trying to see what are the odds we get new devices on the market in the future that can cause us problems...
What we need is floating point render textures in unity.
Google publish data here (googling 'android distribution dashboard' will find it in case the link goes stale)
Currently, 78.61% of Google Play users are on devices that support GLES 3.2.
Going forward, I'd say it's a certainty that some newly produced Android won't have 3.2 support, but I think they'll be relatively rare devices and aimed at the cheaper end of the market.