Despite the ongoing beef between the UFC and Spike, Spike still has a contract to fulfill and will be airing preliminary specials for the next two pay-per-view events. UFC 133 on August 6th and UFC 134 on August 27th will both have two fights featured on the network. MMAJunkie has the info for UFC 133:
Spike currently has four more preliminary events during the rest of 2011 after these two. With five pay-per-views tentatively scheduled over the fall and winter, it looks like one of the events won't have any fights featured on Spike. Ion has picked up those events to broadcast when Spike has passed, but it's unclear if that will continue in the future.