"Regarding the Beast Wars "Masterpiece" figures, I felt our first goal was to get to Dinobot, and now the next goal is (Beast Wars) Megatron, so I would like to do my best for that one."
This suggests that Beast Wars Dinobot was their first milestone/target to reach in this line and now that he has been accomplished, the next milestone would be Beast Wars Megatron. It definitely confirms that he is eventually coming and on their minds but it doesn't mean he is next. If the milestone interpretation is correct, we might even be seeing other Beast Wars MPs before Beast Wars Megatron. There are also other masterpiece figures in the works that could come out before, such as Trailcutter and Hoist. Let's just hope he comes with a ducky accessory when he does come out.
Below is the original quote discovered by our own Actar.
Actar wrote:According to a tweet regarding the new Transformers Generations 2018 book, there was a comment by the designers of MP-41 Dinobot:
「『マスターピース』のビーストウォーズに関しては、まず第一目標がダイノボットで、その次はメガトロンだと思っていましたので、そこに向けて頑張っていきたいですね。」
Their first target for the BW MPs was Dinobot. Now, they're aiming for Megatron.
While this is not confirmation that Megatron will be next, the team has shown an interest in making one.