jQuery 1.4 Alpha 2 Released.

This is the second release of 1.4 Alpha version. 1.4 version contains some improvements and fixes. They are trying to fix all of the submitted bugs. And they will add some optimizations. Below a list of improvements from the Alpha 1 release announcement.

live was drastically overhauled and now supports submit, change, mouseenter, mouseleave, focus, and blur events in all browsers. Also now supports context and data.
append, prepend, etc. have been heavily optimized.
add has been adjusted to always return elements in document order.
find, empty, remove, addClass, removeClass, hasClass, attr, and css have been heavily optimized.