Covenant and Promethean Weapon trailers?

Anybody have any idea when we might get a look at these?

Maybe one per month as there is time for that. But since premethean weps are new, i think 343 wont show it to us and would leave it as a surprise. For the covenant weapons, they usually have some surprises, so there could be a trailer later. Unsc reapons are predictable therefore there wouldnt be any surprises anyway, so therefore they can show that trailer at ease.

they already said they will be doing both in the future.