Adobe Photoshop software is a popular professional-quality bitmap image editor that handles
Graphics editing package. Supports layers, alpha channels and much more. Photoshop is similar yet still different from Gimp.
Photoshop CC 2014 (15.0) was released on 18 June 2014. CC 2014 features improvements to content-aware tools, two new blur tools (spin blur and path blur) and a new focus mask feature that enables the user to select parts of an image based on whether they are in focus or not. Other minor improvements have been made, including speed increases for certain tasks. - Wikipedia
Photoshop CC 2015 was released on 15 June 2015. Adobe added several features including Adobe Stock, which is a library of custom stocks. They also added the ability to have more than one layer style, for example in the older versions of Photoshop you could only have one shadow for a layer, but in CC 2015 you can have up to ten. Other minor features like Export As, which is a form of the Save For Web in CC 2014 were also added. CC 2015 also marks the 25th anniversary of Photoshop.