I would be somewhat (and pleasantly) surprised to see the Hyperios Whirlwind, Helios Land Raider, and any Contemptor. GW hasn't had Citadel cannibalize the Forgeworld line for some time, but had them create alternate lines from there.
There are already 2 Flyers, and Devastators are a given for a Flakk Missile option. It's also possible (even likely, based on the Green Emos) to see Flakk options for both Scouts and Tacticals. Dreadnought is a possibility, though (again, basing it off the DA) not likely, and the Land Speeder less.