Photoshop :: Functionality Of Files Processed With CC?

Adobe has stated that Photoshop CC users will have access to all files saved on their computers.What will be the functionality of files processed with Photoshop CC and saved on my computer if I no longer subscribe to Photoshop CC?
 
Adobe will introduce new functions such as Camera Shake Reduction to Photoshop CC.  Let's say that I use a new function on a layer or as a Smart Object, and then save it on my computer, and then end my subscription to Photoshop CC.  Will I be able to open the file with my layers intact and editable in any program other than Photoshop CC?
 
If I save the files with the layers merged as TIFFs or JPEGs I assume that I will be able to open them with most photo programs. Let's say that I do not save merged files and I am willing to sacrifice the layers.  Will Photoshop CC be required to merge the layers and save as files that can be edited in other programs?  What happens with other file types such as PSDs?
 
Let's say I own CS6 or previous versions with perpetual licenses.  Will I be able to open and edit files in CS6 with layers created in Photoshop CC?