Ok so I just today rebooted my surface to factory settings and performed all the updates that were available. I'm left with 13.3gb left. If Microsoft keeps piling on to the memory that's at hand what's gonna happen say 6 months to a year from now? They really should just open up the sd card for storage without needing to hack into the system. That's about the only plausible thing I can see that would work to keep the surface Rt relevant with enough memory.