I made a quick Mockup of what I think the next webOS phone will be. Mainly targeted at the business users, with all the guts and glory from the Pre, but in a more Treo like form factor. The mockup is basically a Treo Pro with a slightly enlarged Pixi screen (same resolution) and all buttons removed and replaced by a gesture area.
Release this puppy at a good price point and give the blackberry Tour/Bold/Curve a run for their money.
Not really sure what they will call it. The Treo name holds a lot of marketing power, but I have a feeling it will be another "P" name.
I made a similar mockup of what I though the Pixi was going to look like and I was pretty close.