If I want to write a Weld, JSF 2.0, JPA 2.0 app now...

[asookazian]

Must I use the RIs for all those specs?  or are there any alternatives available yet?

So the app consists of: managed beans, facelets, entity classes (similar to booking example but potentially w/o EJB 3.1 components to keep things simple at first)

[nickarls]

Glassfish will by definition be the first one to have the entire palette. Alternatives for RI:s will come later, I'm not aware of any new EE 6 API that has two or more implementations passing the entire TCK. Well, perhaps 330...