No.
The U.S. attempts to improve relationships with Cuba have less to do with Pres. Obama and more to do with geo political pragmatism.
There is no chance of real good relations between Cuba and US as long as Fidel Castro is alive, but there is a reasonable chance when he is gone. The Russians can’t afford to adequately support the Cuban economy (they wrote off about 30 billion in debt a couple of years ago. They need us, and it is in our interest that they join “the Americas”
An opportunity exists to bring the Cubans back into the Western sphere. The idea is not the President’s original notion. There have been plenty of essays on the topic in Foreign Affairs for decades but especially since the Soviet Union fell apart.
The next president will continue the effort, whomever that person may be. And if the Russians would interfere, the effort will increase in urgency. Plus, there is no longer the Cuba/Berlin standoff that existed before the collapse of the SU