Palm Mansion is a device we’ve heard about before, when it was leaked as part of the HP-acquired brand portofolio for upcoming devices. Recent rumors have mentioned its size, specially as far as the screen diagonal is concerned and it appears we’re dealing with a 5 inch device, that might as well be a Dell Streak rival.

However, this unit will still be marketed as a smartphone, possibly one that’s not part of the Pre or Pixi series. Other features are the confirmed touch display with 480 x 800 pixel resolution and… that’s about it, unless you count the rumors saying it’ll launch by the end of Q1 2011. The 5 inch smartphone could turn into a nifty tablet, in case Palm has a change of heart.

We’re curious to learn what HP will be providing for this unit and what OS it’ll be based on. WebOS 2.0 anyone?