the more I think about it, the less I think there will be a new one today. Why?
we usually get a preview of iOS in april. Then wwdc in june and an iPhone release a few weeks later, in late june/early july
thats 3 months from when the devs get ahold of the new iOS to when it (along with the new phone) is released.
however, there was no april preview. Today is the first preview. So if they want a 3 month period for devs to help them iron out bugs and to update their apps for compatibility and new features, the release will have to fall in september as rumored