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will they release a new version of the sdk w/ the iphone 3g?

My guess is they won't stop improving the SDK for a long time to come (especially if the iPhone / AppStore is a worldwide success) but for now, they've got an SDK freeze until the AppStore has been stress tested and more issues are found. Might see something within a few weeks.
 
There are still many, many bugs to fix and many, many enhancement reports to sort through. I would certainly not expect that its going to be static, but then again right now is the time to make sure the current SDK with its current features gets off to a good start with the public. You know, they people buying stuff?
 
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