If you'd read the announcements of them reforming Alice, you'd see that William DuVall (from Comes With The Fall and also Jerry's touring band) will be handling vocals in the group now. This brings up a couple of things that need to be said:
1) I was, am and always will be a big AiC fan
2) Layne was a great vocalist/frontman, and will be missed
3) Layne did NOT make or break Alice in Chains, Jerry did/does
4) Judging from when I saw DuVall perform with Jerry at his solo shows, he is a great replacement for the position
I understand people being wary of resurrecting the group without Layne, but the fact of the matter is that Jerry was the driving force in the band. Hell, he even did a bunch of the vocals at the time anyway. Personally I can't wait for them to roll around my area, Alice is back!
Just my 2 cents, let the flames begin