Personally, I use a Nikon and like their Capture NX2 software for pre-processing any RAW images before playing around in PS of any version. Capture NX2 reads all the camera's settings far better than Adobe does, imho, like Nikon Adobe RGB 4 which isn't a part of Adobe's software. I just dump them out of Capture NX2 as a TIFF and use whatever software beyond that point. Plus, Capture NX2 is still a "perpetual license" too.
Aside, I believe even the retouch brush in Capture NX2 does a better job with skin texture without going to the plasticity look of PS, and its 'Control Points' are invaluable at times with odd lighting (Kelvin) colorations where it takes a bit more work in PS to address those matters.
Adobe may do something with stacked or layered PSD files in the future, maybe layered TIFFs too since they bought the format, so future edits may be a bit difficult - if not impossible - going back to older versions. Time will tell. Shades of AutoDesk's AutoCAD where a new version is unreadable by an older version which forces the engineer to update for $2,935 (The "upgrade price" for AutoCAD 2014. New is $4,195.00) who got the newest file.
SG