Well aside from the new flappy tech, it looks like T-70s have the ship ability:
Weapon Hardpoint - You can equip 1 Cannon, Torpedo, or Missile upgrade.
I guess that will help them be a bit more flexible than their T-65 counterpart.
As for stats we know they are 3/2/4/? I'm guessing they will likely get a 2 for shields, though I could see them bumping it to 3 like in 1.0.
They look to have 3 actions, Focus, Target Lock, and ?. Based off the configuration's art from the Conversion pack image from Gencon it looks like when their S-foils are closed they get a White Barrel Roll so I'm guessing that they have the inverse of the T-65's S-foils card and thus the T-70 instead of having a normal white barrel roll it instead has a white boost for its last general action.
As for Poe, looks like his ability is:
After you perform an action, you may spend 1 charge to perform a white action treating it as red.
So looks like Poe loses some of his durability and free attack mod in 2.0 but can PTL and always guarantee having two mods when attacking.