We are about to release Mono 1.2.4. It has been a personal difficult decision, as only a few times in the life of a project you reach such a nicely rounded release name.
Wade has uploaded the test packages for Mono 1.2.4 for various architectures here: http://mono.ximian.com/monobuild/preview/download-preview
The diffs between 1.2.3 and 1.2.4 for the mono package (mono and mcs) are almost 20 megabytes in size (I did not count mono-basic, libgdiplus, monodoc, libgdiplus, xsp or mod_mono).
This release has a pretty much finished version of ASP.NET 2.0, with the exception of WebParts, which we have not done much about yet.
See my current embryonic release notes for more details.