SOLVED 1.6.0. rc 2 ?

Been using 1.6.0 (nov4) and got a note from github about 1.6.0.rc2. 1. Don't see any 1.6.0 here to download , not even nightly build. Anybody knows why? 2. So this may be irrelevant question then - but is rc2 THAT different from 1.6.0 (Nov4) ? Just asking.( I'll ask at github soon)

Vaclav