Transformers 3: Dark of the Moon

The new movie of the Transformers franchise, Dark of the Moon, was a hit. After watching the full 2 1/2 hours of it, I found it was better than its predecessors. The last hour of intense action had me on the edge of my seat. However, even though this movie was, awesome, there are several rumors that it will be the last movie of the franchise. I ask what do you, the people think, feel free to comment.