I have put a first beta of the new library that is rewritten to support objects as arguments (like submitting a complete DataSet from JavaScript code), export of enums to JavaScript, script wrappers are cached on the server and marked with the HTTP ETag to save bandwidth, allow encryption of data stream (client and server-side), using Namespaces on client-side JavaScript, ...
Download an example project from http://ajax.schwarz-interactive.de/download/AjaxProSample-beta.zip [1]. Please note: this is a very early beta version that should not be used on live systems. Feedback is welcome, use my contact form here on this web site or my email.