From over on our sister site, AjaxDeveloper.org, there's this new post about the latest version of Joshua Eichorn's HTML_AJAX PEAR class, version 0.2.0.

HTML_AJAX 0.2.0 is out. There were a number of changes most of them on the JavaScript side. The code is now released on the lgpl so thoses of you with GPL apps should feel comfortable using it now.

I don’t have time to write another tutorial showing off the new changes but if your looking a good place to start is with the new HTML_AJAX_Request class in JavaScript. The changelog has some more information. The roadmap has also been updated.

Looks like it was a pretty major rewrite, changing the bulk of the code from JPSpan to something leaner, as well as some new features - a new request object with all the needed info, and advancements that will make queuing and pooling a possibility in the future.