There has been a rumor going around in the streets that the next iOS version for the iDevices, the iOS 5, has been delayed to a late fall release this year that's being built around the Cloud. The mobile Apple OS is said to be a complete revamp of the current iOS 4; with more cloud based services. Well, that would be Apple's hot topic on the WWDC in June this year. It's also expected that as a new version of the Mac OSX Lion would be launched in June, it's likely that the cloud will incorporate many of it's features as well.
The fall release is indeed not following the iOS roadmap. But who knows? It's still a rumor. We'll keep you updated as we get more information on this.
Source: TechCrunch