Hi all,
sorry for the delay, this isn't simple. For example ORM 5.2 isn't still fully compatible with WildFly, that's another work still being in progress and we actually decided that the next Wildfly version will have ORM 5.1.

James Pether Sörling interesting idea, we could indeed start uploading some 5.7-previews even though 5.6 isn't finished. I hope this won't get too confusing for other users though. I'll see what others think about this idea on the mailing list, however even that strategy will need to wait a a week at least as we're very busy.