Well I certainly hope the Tau will be next, mayhap I'll aquire the new Dark Eldar book and play them rather than switching back to nids.
Don't be silly, they just redid Dark Eldar. Expect at least ten new Marines codices before anything else comes out. Maybe they'll make a Space Sharks codex.
First Impressions on the Deldar: .... I'm not quite sure how to deal with them yet. They're bristling with shuriken cannons and pretty much the whole army starts out mounted on skimmers. The HQs have a 2+ Invuln save that goes away forever the first time they fail it. A very large number of their units are I5 or I6. Every time a unit wipes out another unit in close combat they get a pain token, which gives them various abilities like Furious Charge, Feel No Pain, and Fearless.
I'm thinking autocannons out the wazoo on my squads because the sheer number of non-squadroned vehicles makes lascannons and dedicated anti-vehicle squads less attractive. Since their skimmers are all open topped and 10/10/10 or 11/11/10, it shouldn't be hard to pop them, I just need the volume of shots to make it work.
Because their weapons are pretty much all poisoned tough troops aren't a significant benefit. The sheer volume of shots all their open-topped skimmers provides means even a DP is hosed if it gets caught in the open, and T5/6 isn't much of a benefit. I'm thinking guard or something will probably do better, since they don't have that much anti-tank (A few dark lances on ravagers that blow up if you give them a stern look), and poisoned weapons aren't as effective against the mass of humanity.
The 2+ invuln saves on their ICs is pretty tough but again, it sounds like the best medicine for DE is lots of cheap, weak troops. Since the save is gone if they fail it, and their regular armor save is like 5+, all you have to do is pump them full of as many shots as you can hoping math will be on your side. Once you've got that they can be killed in close combat. I got Baron Sathonyx with a power fist and Vect with a force weapon in pretty much the same round.
Oh, watch out. Vect has a short-ranged blast weapon that heals him for every unsaved wound.
Also, new Mandrakes look retarded. It's like Illidan and Drizzt had a baby and the baby watched too much anime. The new ravager is sexy as hell though, most of the models are.