Well, it’s getting close. The RichFaces team has released RichFaces 4 Milestone 4 release. This milestone includes the core functionality for long awaited client-side validation feature, new components (inplaceSelect, select, calendar, tooltip, and tree), and a4j:push is now based on Comet implementation. You can find more information from Jay’s post. According to Jay, Milestone 5 is going to be the last one, after that we should expect the first CR release!
In addition, check out two great posts from Ilya:
Max Katz 
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