And now I hear that A20 card will be shipped with kernel 3.4. Sure, it's not lower than 3.2 but how long will glibc support 3.4? What about other packages?
Actually, mainline support for A20 isn't that bad, depending on your specific use case. Check http://linux-sunxi.org/Linux_mainlining_effort. It's fairly good for headless servers, less so for tablets and desktops. And there is (slow) progress, so its future isn't too bleak.
Stefan