HP TouchPad and Pre 3 Rogers Release Dates » Phone Reviews
"As for the HP Pre 3, the word is Rogers will also offer the successor to the Palm Pre 2 as of the 19th of July"
See the link. It's speculation, but ties in with what people say about a few days after release of touchpad.
Just thought i'd link. I really want both a touchpad and pre3 - sick of my android/iOS poosticks.