Struts and WebWork join forces
You can read it everywhere, even on TheServerSide:
WebWork merging with Struts
IMO this move was overdue. Struts technology side could be highly enhanced by WebWorks technology and WebWork is almost useless with the current momentum and userbase. So the merger makes perfectly sense.
I do not see it as a direkt rival for JSF. JSF is more component based and there will be enough frameworks emerging on the JSF-Side, coping with limitations of JSF and enhancing it.
So Struts/WebWork is rather the JSF counterpart which is needed.
I wish the Struts and WebWork teams the best in joining forces.