All signs are pointing toward an early June Pre launch at this point; of course, we know it'll launch in the first half of the year -- and we're quickly running out of first half -- but we've heard increased chatter the past few weeks suggesting that June 5 or June 7 are particularly likely targets for bringing Palm's (and Sprint's) would-be savior to market. The latest evidence comes once again from our friends at Best Buy, where the recently-added Touchstone invent