I'm very much hoping to have Tapestry 5.0.6 out soon. I've been squeezing in some more time to work on Tapestry 5 and just added a BeanDisplay component (to complement the BeanEditor component).
The Ajax story for Tapestry 5 is still up in the air ... the specter of writing an abstraction layer has come back. And I still want better, smarter handling of Hibernate ... it seems to me that the BeanEditor should be capable of handling to-one relationships in a smart way. And Spring WebFlow integration would be a snap if I just had a couple of days to work on it.
I'm personally anxious to get Tapestry 5 solid and shipped ... but not before it's ready.