Simple question: is Unity giving refunds for the Iphone SDK that is now useless?
Nobody has said that Unity iPhone is useless. If it is, then I'm sure UT will say something about refunds. Until that time, nobody has any real info one way or the other. However, Unity iPhone apps are still being approved as of today (June 4).
Sept. 9 update: Apple is now expressly allowing game engines. No refunds, Unity was never rendered useless, and now we even have actual info.
Here's your answer right here: http://www.apple.com/pr/library/2010/09/09statement.html