Don't worry guys, you won't have to take apart your Surface Pros in order to find out if the SSD is replaceable. We did the hard work and found out that yes, the SSD is replaceable, but opening the Surface Pro is terrible.

Here is a shot of the actual SSD found in the Surface Pro:

From the teardown: "The Micron RealSSD C400 packs 64 GB of storage capacity. It can read 500MB/s and write 95 MB/s — all in a tiny 1.8" form factor."