Corona is a simple Untetherd Jailbreak tool that can convert tethered jailbreak iOS device into an untethered running on iOS 5.0.1. Well it looks like the Corona fame is short lived. Yes, according to Nadeem Ateyeh (@Nadeem97) the iOS 5.1 beta 3 kills the Corona untether jailbreak. But still Redsn0w can untether jailbreak iOS 5 and its not fixed in iOS 5.1.

If Apple plans to release iOS 5.1 public version this week, then that will be the end of Corona. As I say, make sure you have save SHSH blobs.

No confirmation from the iPhone Dev Team regarding this claim, so we are yet to confirm the claim.