The heatwave has been confirmed to be forerunner weapon appears that we could be having more weapons in the sandbox with the. I hope the Spartan laser railgun and gauss cannon make a return and some new experimental unsc weapon as well. There are more likely new banished weapons as well
There was a Promethean enemy in the 20 years of Halo wallpaper they released so they might come back but honestly I hope they don’t. The Heatwave does look really fun to use though.