Not sure if you've noticed, but text / video messaging
has remained fairly constant while web browsing, multimedia playback and navigation applications have all steadily improved. Thankfully, The Wireless Association and its awesomely named Enhanced Messaging Action Team has a thing or two to say about that. The group has just released its Final Set of Use Cases and Call Flows for the development of Enhanced Messaging solutions, which have reportedly been agreed to by every major US carrier. This provides said carriers with "a complete set of the tools and information" that they can use to develop interoperable Enhanced Messaging products, enabling both Group Messaging and Presence functionality. The former enables "multiple users to interact with text based communication on their mobile devices, as well as support multimedia files in group communications," while the entire Enhanced Messaging platform is said to be "a presence-enabled mobile messaging service that allows for richer real-time text messaging and communications than traditional mobile messaging." Hard to say when any meaningful developments beyond this will occur, but we're clearly just years away from SMS telepathy.
[Image courtesy of Cast-Online