Go has done nothing new for fast compile times, like any old timer coder will remember from Algol linage of compilers, with Turbo Pascal for MS-DOS being a good example of how long ago those fast compile times are known.
I'm sadly too young and ignorant of CS/technology history to be well-acquainted with the "old times". (It's something I intend to fix.)
Even so, I'm all for praising the good things that Go does: if nothing, because of the tremendous mindshare it's getting and the number of people it reaches.
This is just one example, there are plenty of other languages to choose from with a module based compilation model, only C and C++ toolchains have lousy build times given their textual inclusion model.
