I just stumbled across this a few minutes ago:
The one and only reason I thought it belonged here is due to the last technology preview the demonstration covers - improved warping. Currently, the warp tool in Photoshop is good - as long as you have patience. It appears that the new warp tool allows the user to anchor specific section of the image while warping the rest. That's a huge benefit for real estate photographers who need to correct those straight lines.