Their
facebook page has some interesting pictures including concept art of the Shrike, which looks almost like what a "shrike mk.II" would look like, plus the turbograv cycle 9what was it called? wildcat?), which looks quite different but still neat. (EDIT: Supposedly they have a forum but I've yet to find it)
Actually that's a trippy thought. Iron sights, inaccuracy and more momentum-based ground movement for Tribes. As a mod, I could totally go for that.
There was a mod for Tribes 2 called construction mod where you used game objects to build various things (kinda like Garry's Mod except the game actually allowed objeccts to scale so you could build proper buildings easily). A sub-mod called combat construction was made, allowing you to build your own bunkers and such, and afterwards people would fight it out. The sub-mod disabled jetpacks except on the heavy, which had very limited jetpacks, and the weapons were more conventional. Unfortunately movement didn't affect your aim, so it was sort of like Ace of Spades. There were pretty cool vehicles though, like a helicopter (just a shrike model) where the pilot got dumbfire rockets and the gunner had a machinegun turret mounted on the bottom.
I hope this game has good modding capability... seriously.
EDIT: Tribes 2 also had and in-game "tribes" system which basically gave every player their own player profile, private messaging system, and clans. I suppose it was similar to steam community. If you were in a tribe your tribe tags would appear in front of behind your name without you having to change it, and it displayed in different color so everyone knew it was a clan tag. I kinda doubt this new game would do anything like that though...