Swapping existing hard drive into new laptop
If you are moving to a MBP with a different chipset than what you currently have, and since it's a new revision it will be all new hardware, then you can do the SSD transfer but you will get a lot of issues with driver and system compatibility.

The best thing would be to do a Time Machine backup of you current system, install the SSD, fresh install of OSX, and during the user registration restore your data from a Time Machine backup.