The XO Powersuit will be GDI's special unit in the Enhanced version of DTA:


It made an appearance Tiberian Sun trailer that was shown in TD, although the trailer itself looked nothing like Tiberian Sun at all.
The XO Powersuit was modelled by Machine and was based on Westwood's concept art.

Ohh that's the suit from the tiberium sun teaser video that came with Red Alert, isn't it?

ninja: maybe I didn't scroll down but I missed that

Nah, you really did get ninja'd

Yeah, that teaser came with C&C1, not RA1