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John Warden liked to drop hints about what was coming. We can say that with certainty.
Even though he's moving on to other brands within Hasbro, lines are planned several years in advance, meaning he likely had some input on and/or knew what would follow after the War For Cybertron Trilogy, so to maybe get an idea of what's coming, you should go back and have a look at what he's said in the past.
Here's a fun one to kick off any potential sleuths:
John Warden, speaking with Allspark TV at Toy Fair 2020:
Toy Fair 2020 Interview with Ben Montano and John Warden
>John: I remember when I first came onto this brand many, many years ago [...] I was a G1 kid, I grew up with G1. I read the comics and I watched the show. I'd just got off watching the new movies from Paramount, so that was my knowledge. I knew about Beast Wars, knew about some things, but it wasn't until I really got in there, started to talking to people at San Diego, at other conventions. You see the passion in people's faces when they talk about the Armada Trilogy, they talk about the Bay Universe, and you get energised from that. You realise, like when I started, I went back and started watching all these old [...] and I fell in love with it. And it's crazy, you understand why people love Dinobot so much. And it's like, you feel it. And I think that's the magic of working on a brand like this. Just like the brand, the characters convert, they transform, it has a way of transforming you
