in my view, having ichat on the iphone will be inevitable as IM and SMS do not directly compete with each other. if ichat isn't available on the iphone by the time it launches, it'll probably be available as a free software update as reported on this 25th april article regarding iphone and appletv updates:
http://www.macnn.com/articles/07/04/25/iphone.apple.tv.upgrades/
for apple not to offer ichat on the iphone would be a SERIOUS mistake.
http://www.macnn.com/articles/07/04/25/iphone.apple.tv.upgrades/
for apple not to offer ichat on the iphone would be a SERIOUS mistake.