It looks like you can just complete the 10.8 updates until they are all there.

https://support.apple.com/en-us/HT202502

Apparently, it is still what they are shipping today as a non-retina 13" MBP.

http://9to5mac.com/community/why-apple-continues-to-sell-the-mid-2012-macbook-pro/

Last edited by slolerner; 06/18/15 04:08 AM. Reason: changes