Please visit The BluePack wiki page for up-to-date schematics.
The PCB version of the BluePack is a good choice if you already have HC-05 and HC-06 Bluetooth modules lying around. A big advantage about the pack is that all pins are bought out to headers in addition to the headers that connect to the Launchpad.
The BluePack is the first community generated BoosterPack designed by member PentiumPC on the Forums. You can see his development thread here.