The difference I saw in the drone is that it actually moves around by itself now and it fires that orange tech ball (sorry, I forgot the name =\) that stuns you
No, wait. The Combat Drone's Evo6 Rockets. I got it now! The "stuns you" bit got me mixed up, because that's what the Combat Drones do at close proximity—shock you with this bolt of electricity... It'd be good if they do that as well.
Also, about the extraction credit bonus: for it to apply correctly, they apparently have to do some server side tweaking when the patch completely rolled out on all platforms.
[EDIT] - "Banshee´s warp ball shoots through walls and cover"
Um... Is that true? For people who aren't hosting, that thing's more than a little tough to avoid without cover.