If it is being released in just four months time, it would need at least 2-3 months for the game discs to be manufactured and shipped from China (or where ever), so I would have to say that the game would need to be finished by now, or at the very least, would be finishing up the last things like recording lines and sounds.
It's definitely a Cyberverse game, so it isn't expected to be too detailed, as the demographic of Cyberverse are the kids... which makes it odd that it would be released on game consoles instead of being an online web game or app game (where the kids live these days, or at least, where they prefer their games to be).
With the PS5 being announced, and Transformers console games are pretty rare (most have been based on the Movies), this could end up being the last Transformers game for the PS4... but at least it is good (for me) that this one is being released on the PS4, as I'm still not wanting to buy a new games console yet.