Hmmm sounds a bit sketchy.... Thanks for the heads-up.
Can I ask, is this something you've found from running the beta on an iPhone 4 or just 'heard about'?
I had the GM loaded on my iPhone 4 that im loaning to a friend so I had a chance to play with it. I couldnt tell you of any features that might be missing (tranperancy and paralax I THINK are missing?) but the one thing that hit me was definitely how SLOW everything was loading/moving.