Adobe aren’t going to sell you any more versions of Photoshop. If you want anything newer than CS 6, you’ll have to pay them a yearly subscription to the “cloud” version. That will cost you $240/yr.
We’re reinventing our desktop apps to make your creative process seamless, intuitive, and more connected than ever. Our newest release — including Photoshop® CC and Illustrator® CC — is coming soon, and will be available only in Adobe® Creative Cloud™. If you join Creative Cloud now, you’ll have access to the new CC applications the moment they are available.
While Adobe Creative Suite® 6 products will continue to be available for purchase, Adobe has no plans for future releases of Creative Suite or other CS products.