One of the more suprising announcements in Apple’s WWDC keynote was iMessage in iOS5.
Besides the already mentioned fact that the operators will not like this replacement of their SMS services, especially as it seems to be seamlessly switching between creating a SMS and an iMessage message (see “Cult of Mac“).
But even more surprising is the fact that iMessage is not better integrated with Facetime. The features iMessage provides are very similar to the Skype Chat/IM function (conversations, typing indication). And now Microsoft (also offering a Mobile OS) will control Skype with it’s very integrated communication suite: voice, video, messaging.
Apple doesn’t seem to have a bigger communication suite strategy in place yet, but I assume it is already in the making.
Think of Facetime + iMessage + Mail (now with conversations in Lion) integration available on iOS and MacOS devices.