140 characters of powers: No it seems likely, according to TechCrunch, that we will see Twitter integrated into iOS. And twitter appears to also be important on sharing photos, from the new iPhone operating system, which will be released on WWDC next week.
Imagine, take a photo, then just send it to a twitter account or list. Great way to distribute photos. And I expect that the photo will be outside the 140 characters, just being represented with a tiny icon.
This may make messaging and photo sharing apps some real competition. Finally we all will be better off!