In case you didn't know, CS6 is finished and will never be updated. You are about five versions behind, the current version is CC2018.
Answers to questions:
* No, it is not cloud software
* Yes it is subscription only
* From US$10 per month for yearly contract
* No, new features like new camera support are only added to the latest version
Thank you Ged Traynor I’m only just starting to use RAW files in my photography so that is most helpful.