There is a thread on the TouchArcade forums discussing the "secrets" of the 1.06 update. Here is a link: http://forums.toucharcade.com/showthread.php?t=5368. Here is a quote detailing some of the happenings in this build and what Dave and Allan went through to get it out:
"Hey Everyone, I submitted the new update last night right after 1.05 got approved. This one is our secret update and as an added bonus, we are including a Boulder that you can throw on top of the pigmies to squish them or throw at a bunch of them to bowl them all off the island.
So, for this update we didn't really get to any new technology, I started investigating some low level sound routines (AudioUnit) that are not really documented well by Apple, our sound is about 7 megs right now, so I want to figure out how we can apply compression and also, there is an issue with playing the same sound twice in a row without cutting off the original sound. Our default sound engine uses openAl which is good for 3d sound in a 3d engine, but since our game is mainly 2d we don’t really need what it offers, I just want something that lets us play sounds with no lag. Hopefully I can finish it for next weeks update.
This was also the second week in a row were we were up to 3:00 AM trying to get the update out, it's weird, no matter how hard we try to get parts done early, we always end up staying up too late, Allan is usually a morning person and I have a late day at the world golf tour offices on Mondays so this schedule isn't that maintainable for us. Hopefully this week we figure out how to make it easier on ourselves."