The next Photoshop CC update will bring a new feature called "Content Aware Crop Tool." At first sight, it works quite similar to the Content Aware Fill Tool, which was first introduced in Photoshop CS5. The new crop feature fills the corner gaps intelligently while cropping after straightening.
When the Content Aware Fill Tool was first introduced, it was considered revolutionary progress; however, the practical usage of this tool was limited to uniform areas on the image. In regards to the demonstration video, the new feature looks to be quite successful at filling the missing gaps with complicated textures such as gravel grounds and fluffy clouds, even on large areas.
As a matter of course, the Content Aware technology itself isn't a game changer for the retouching process, due to the repeated patterns that could be recognized easily. Taking into consideration that Photoshop is just software, these little mistakes during the calculation could be considered acceptable and could be fixed with a little effort with healing and cloning. And beyond any doubt, it will save you time in retouching.
As the new feature was just introduced, we'll need to wait for the upcoming Photoshop CC update to test with various image types to see more results. Adobe hasn't made public the release date of the latest update, but considering Photoshop's update interval, it will likely be available this July.