Jim Minatel's Wrox Book Editor Blog ASP.NET, XML, CSS, Ajax, PHP: New on Wrox First Wikis
"And on Professional JavaScript Frameworks, we've got 7 chapters out of the 39 planned. so far we're focusing on YUI (2 chapters), Dojo (3 chapters), and MooTools (2 chapters). Soon, we'll start adding jQuery, Prototype, and ExtJS chapters soon too."