Played this yesterday - got early access to the beta thanks to work
So far, it's good. I'm not too good at the multiplayer....LOL, so i wasn't able to get any of the new weapons yet. I did get to do a few new kills. And there is a cool move that you can do - you can now pull someone over a small wall if they are hiding. You don't get an automatic kill either, which is cool. They have the opportunity to fight back.
Everything else seems to be there too.....chainsaw duels! And the grafix are pretty awesome.
The new characters seem fun too.
There is also a new multiplayer called Dodgeball. I couldn't log into that yesterday, was only able to log into Deathmatch. I will play it again today and see what it's all about.