On InfoQ, Spring's Jürgen Höller says this about the EE 6 Web Profile:
Implementing this profile is not very attractive. I am yet to see a vendor who is aiming to implement this profile but not the full profile.
So I asked Scott Ferguson from Caucho. He replies:
We definitely are aiming for the web profile.
So I hope that's the last we hear of this particular item of FUD. I promise to keep you guys up to date with future FUD, as it emerges.
By the way, I have friends who are using Resin and the built-in CDI implementation, CanDI, with great success.