This is the second milestone of the new 1.5.x Wicket series. The focus of 1.5.x is to provide our users with a more powerful and flexible request processing pipeline.
This release is NOT production-ready, it is more of a technology demo that should facilitate user-feedback we can fold into the next milestone.
New and noteworthy items in this milestone include Inter-component event mechanism which allows components to communicate in a decoupled fashion, and improved resource caching.