Engadget managed to get ahold of a leaked launch timeline from T-Mobile and if you look closely there at the last listing you will see that whatever happens on June 19th, it "WILL BE BIG." Thankfully, we don't have to speculate too wildly, as AndroidSPIN reports that they received two confirmations that FroYo will hit the device.
Unfortunately, the article from AndroidSPIN does not even quote the two sources mentioned in the article. As if to expose the lack of credibility of the story, including who and what was confirmed, commenters on the AndroidSPIN article said that "the update isnt froyo its a maintenance update" and asked if the author would "Mind sharing what “two sources” you got this info from?"
Engadget is also not completely sold on the idea of it being the Android 2.2 update. They write that it might be "Yet another new myTouch model." What's more, TmoNews has a screen capture showing that T-Mobile stores will be opening early on June 19th. They think that the reason for the special hours may be:
"an all hands meeting will be taking place and stores will be open extra early. Its possible this is some kind of extra special kick off of the myTouch Slide, or its possible T-Mobile is holding some kind of sale extravaganza. It’s also entirely possible it’s nothing at all and yet the story becomes somewhat juicier given the earlier leak. June 19th can’t come soon enough."
At this point, I can't even say what exactly will happen, but I'll keep my eyes open and report back when I see something interesting.
Image from Engadget