Good question. Looks like they haven't but Opera is hoping that making a public announcement will pressure them into approving.
> "This is a provocative move by Opera which will result in a tricky and high profile PR exercise for Apple should it decide not to allow Opera mini through the App Store," CCS Insight analyst Geoff Blaber said.
> Opera said it saw no reason why its browser, the world's most widely used on cellphones, should be rejected. "We have not submitted it yet to the Apple App Store. However, we hope that Apple will not deny their users a choice in Web browsing experience," said Jon von Tetzchner, co-founder of Opera.