Are Automatic Reference Counting (ARC) applications allowed into the App Store? [closed]-Collection of common programming errors

If you manage to force Xcode 4.0.2 to compile with Clang from LLVM 3, I imagine you could. If you use the LLVM 3 backend, Apple may or may not detect this and invalidate your binary. Of course, you can’t submit with 4.2 as the standard procedure is to only allow stable SDKs.