Don't think that's good idea to update the software every few years.

 The new Photoshop will have a user interface resembling the tablet experience. It will allow users to use the tools and features of the program remotely by using a stylus similar to Apple’s Pencil.

What does the future hold for Adobe Photoshop, and what changes do you think will occur in Photoshop?

Photoshop's transformative power is a result of its multi-faceted and flexible interface. Today, Photoshop CS4 gives users new ways to create compelling artwork in all manner of media, including film and television, print advertising and illustration - just to name a few. New updates now enable PS users to perform automated Healing around complex images while also allowing users to merge two images into one image in order to create 3D effects by combining two 2D layers. Other new features include:

I don’t think that it is a good idea to update the software every few years. We are living in an age where everything is changing and there are things that we already know that soon we will miss them.