I had read it would be after this year, but apparently that was changed. UMass might end up back in FCS, perhaps in 2-4 years. They are trying to put together schedules as an FBS independent. The link shows how difficult that will be for them.
Naturally, ND never should have scheduled a team that was destined to be expelled from the MAC and might end up making a quick U-turn back to the FCS.