I have the same question. GateIn looks interesting, but I do not want to use their CMS since I have already invested a lot of time in Alfresco. Will there be a broader set of gadgets that support any JCR compliant CMS?
CMIS is interseting, but it would be nice to see JBoss or GateIn build these modules and support them so that there is a robust solution.
as I understand RedHat is going to announce the new SitePublisher for JBoss Enterprise Portal (based on eXo add-ons) in JBoss world just a couple of weeks ahead.