Pi Day is probably better luck than the Ides of March, so why not some updates?
GoogleApps
Google Music, version 4.5.914I
KindleFireApps
Dropbox, version 2.3.4
Firefox, version 19.0.2
GO Launcher EX, version 3.31
Visit the updated tutorial for links to both packages, links to the individual APK's, and more information.