Here it goes another update: UltimaProtos and MegaTon weapons.

MEGATON:

As you can see, the first shot basically shows that now instead of using those annoying fire/altfire combos, you can actually use your 0-9 keys to setup the device properlly, with a quite natural animation, while in the second shot is the Megaton already planted and counting down to blow up, unless someone is able to crack the password and disarm the device.

As for the explosion, it's the same mushroom-like nuclear explosion I show in my Preview 2 video (check NW3 Preview 2 here).

ULTIMAPROTOS:

The first shot show the UltimaProtos skinned but with no fx, while the second shows a *part* of the UltimaProtos firing sequence (by "part", I mean that sequence is still missing some ending fx, like lightnings coming out of it at a certain stage).
While "screens" aren't accurate to show, the weapon has some stuff rotating during the sequence at high speeds (like that rotor that becomes incandescent during the sequence).

This weapon takes 8 full seconds to fully charge up until it actually fires the projectile (given that this is pretty much the most powerfull weapon/nuker in the pack, I think it's a reasonable drawback.