Both Kindle Fire app packages have been updated again:
GoogleApps
Earth, version 7.0.1.8177
Google+ (Plus), version 3.2.0.35289806
KindleFireApps
Dropbox, version 2.2
Firefox, version 16.0.1
GO Launcher EX, version 3.17
The tutorial has also been updated, links to new packages can be found there.