Apple released the new Firmware 4.0 beta 4 and its update to the SDK. Latest build is 8A274b, which can be downloaded directly from Apple developers account. OS 4 beta 4 is fast than previous beta and stable releases. Apple also added tons of new features like a new Folder called utilities on Springboard, which contains four native applications: Clock, Calculator, Compass and Voice Memos. Major improvement in Camera roll, now supports landscape mode. Aside from those new wallpapers and minor new features, it seems tethering is back.
Utilities folder on Springboard
Lots ...