just read this on http://www.pocketgamer.biz/r/PG.Biz/App+Store/news.asp?c=30179. Have not confirmed.

Continuing a pattern triggered by consumer criticism over ‘accidental purchases’ of virtual goods in games such as Capcom’s Smurfs’ Village in late 2010, Apple is set to tighten its in-app purchase policy again.

According to developer sources, new apps being submitted to the App Store will limit consumers to a single IAP purchase.

Presumably, the thinking is this single transaction limit, highlighted by an iTunes receipt, will alert users to the availability and cost of IAP. This is particularly important for parents who let their children play on iOS devices, without them or their children being fully aware of the potential cost implications.

post written on my iPhone. please excuse typos.