From a recent thread on the TheServerSide:
Howard Lewis Ship (of Tapestry fame) has sent in a proposal to Apache for the HiveMind project, a simple framework for creating pluggable, configurable, reusable services. HiveMind has grown out of a donation to Apache from WebCT. It is a framework in a similar vein to the other lightweight containers out there, such as PicoContainer, Spring, and Avalon.
I really like Howard Lewis Ship’s Tapestry web framework, which I very much prefer over Struts, so this should be interesting to watch.