Hey there! I currently have a MacBook Pro 13" from mid-2009, which I intend to change for the new MacBook Pro 13" (or 14" of they go with that size) of 2016 once it is released. However, I would already now like to upgrade my current MBP mid-2009 with SSD instead of HDD. Since I'm looking at a 1 TB SSD, which is rather expensive, I wonder what the chances are that the SSD I buy for my old MBP will also be compatible and possible to transfer to a newer MBP? Is there any high risk of Apple starting to use different types of SSD, or even disabling the possibility to change disks? Thanks for any insight!