So, the Transformers team seem to hint that MAYBE we'll be getting more comic deco figures as part of a "capsule" line. Walmart has listings for 2025 for a "Retro inspired" set of figures (4 as indicated by JtPrime, but things can change). I kind of wonder if they'll be comic inspired entries, not the Headmaster-esque modern toys in retro boxes, like I was suspecting.
If those were the "spring" initiative, that would bump Galaxy Force to the fall, where tooling from the 2025 Generations Prime line would be available.
My feeling is that Sideways might be derived from one of the deluxe Primes, while Onyx Prime (assuming they keep the animal alt mode) will get retooled into Cybertron Scourge.