Adobe will not be releasing any further feature or compatibility updates for CS 6, because CS 6 has been replaced by Photoshop CC (Creative Cloud).
You can still buy CS 6. Actually you are buying a perpetual use license. Adobe still owns the software. CS 6 is $609.99
Adobe Photoshop CS6 [LEGACY VERSION]
You get Photoshop CC by subscription and the subscription costs you $19.99 a month.
An advantage of CC is it will always be the latest and greatest. Before, we had to wait 18 to 24 months for the next batch of upgrades to be released as a new version.
Now upgrades are available as soon as they are ready. I got an online upgrade just yesterday.
You can buy Lightroom 5 ($147.97) -
Adobe Photoshop Lightroom 5
CC and Lightroom are professional grade Adobe products.
Lightroom's main purpose is image database management of a large catalog of photos a photographer wants to make money from.
Only 1 of Lightroom's 7 modules, the Develop module, is for image editing. The other 6 modules are use to manage and output your images.
Photoshop CC includes Camera Raw, which is the software Lightroom uses in it's Develop module, and Bridge which is an image browser.
Adobe makes a consumer grade version - Photoshop Elements 12 ($90.24) -
Adobe Photoshop Elements 12
Elements has a consumer grade version of Camera Raw, and includes an image organizer.
There are also free, open source image editing applications you can download.
GIMP.org and Photoscape.org are both popular, and are both very similar to Photoshop Elements.