So let's get something straight here: Google is making a big deal about a new and improved Google Talk - a service that apparently few people use (not an unusual situation for many of Google's new services - Google Spreadsheets, anyone?). Will file sharing, voice mail and music status change anything? Personally, I'm a Google Talk user but I only use it for instant messaging, which makes me a pretty rare breed.
More: For other views, check out Ben Metcalfe, who is far from impressed, and Inside Google.