Software Support Won't End with Android 8.0
The Samsung Galaxy S6, Galaxy S6 Edge, Galaxy S6 Edge+, and Galaxy S6 Active might not get the next major Android upgrade but that doesn't mean software support will end this year.
Google's cooking up a new Android O update (also known as Android 8.0) for Q3. Samsung will, at some point, release the software for Galaxy-branded devices but it's unclear if the Galaxy S6 series will make the cut.
Samsung typically cuts off support after two years so we could see the devices get left behind on Android 7.0 Nougat. That's not good news but it would be much worse if we were talking about the iPhone and iOS.
When Apple kills software support for an iPhone, that's the end. No more features, no more bug fixes, no more security updates.
In the case of Samsung and Galaxy devices, support doesn't end. The Galaxy S6 should continue to get security patches and bug fix updates long after the major updates stop coming.
As for the missing features, you'll be able to root your Galaxy S6 and flash them when they're unofficially released by the Android development community.
The Galaxy S6 series is old but it should get you through the next few years, even if Samsung stops releasing major Android upgrades.
If you want a cheap phone that you can hold onto for a few years, the Galaxy S6 series is certainly worth a look.