This is also pretty huge from an ecosystem point of view. It means you can have books, video series, tutorials etc. targeting this final feature set which is very nice. Not that it's a huge issue but it's cool to buy a programming book knowing that it'll contain a language that will not change for a long time. It's not a huge deal, I own the PragProg book (I don't recall if it's >=1.6 or if there was a version before) but now I know I'll very likely get the 1.8-version when it is released.