Previous summer releases have had IIRC 4-5 big kits spread over two months including some terrain so we're probably only talking 3-4 superheavies max, not enough for everyone, this could well be it for July with another couple in August.
I'd be surprised if there wasn't something Imperial in either July or August with the knight the obvious candidate.
Some sort of apocalypse only defence laser fortification to give an anti titan weapon (e.g. Destroyer) to all armies (except tyranids ) sounds entirely possible and could address balance issues.