Team 17 is making a new 3D Worms game called Worms Ultimate Mayhem. I believe it's going to be Worms 3D and Worms 4 Mayhem combined + HD graphics + Landscape editor? + new additions? I'm not sure about the last two, but I'm sure you'll find what you need to know in the discussion topic on T17 forum.

Apply here.
http://forum.team17.com/showthread.php?p=747052#post747052

Discuss here (and also in this topic)
http://forum.team17.com/showthread.php?t=45750&page=3

Interesting,i hope this one is better,and it doesn't crash...i was not active for a period,and i'm a little bit sceptic about this
Hope they will do it better...though i don't want verry much improoved graphics,i want the same worms feeling.

*Edit: I just saw it right now on Steam,seems real haha!*

Ok. Played it... Not too satisfied , the graphics are not that good,+ Worms 4 Mayhem graphics are better, it fits the cartoonish gameplay..those new enhanced graphics just not fit.And where the hell is the icarus bug? GOT FIXED?! NO BLOODY WAY! It's not fun with the icarus bug fixed ,and i think the rope bugs are fixed too.. boooriiiinnngg + the network gameplay style changed,not the old server-list joining... I thought it's better,but it is not.
Worms 4 Mayhem still RuLLz
yep.

Oh quit complaining about WUM, I've seen the graphics, they definitely look better. I haven't been able to try the game out myself though, because it doesn't work on my PC. I'm also glad they fixed the glitches, it makes it better, not worse. >>

I like the old one more than this.The old one is tweakable,and is more fun with rope bugs and stuff,you can do other things with your friends beside playing the default style.
The graphics are good, but the old graphics are better because they are more cartoonish,and it fits the game.
Some features are great in the new worms,but there is no big difference between these 2 games.