By the end of the movie, Megatron escaped with some new lackey Decepticons and had accepted his new identity, though it remains to be seen whether hell refer to himself as Megatron or Galvatron in Transformers: The Last Knight.
Yes, despite already serving as either the main antagonist or side villain in four movies, Megatron is returning for Transformers: The Last Knight.
Next year, the Transformers franchise continues with its fifth installment, Transformers: The Last Knight.
Transformers: The Last Knight will be released in theaters on June 23, 2017.