...
The release notes for this release are here
Apache Wicket 1.3.0-beta4 is released!
Oct 11, 2007
This release is the fourth in a series of beta releases until we feel confident to finalize Wicket 1.3. This is called a beta because we haven't fixed all the bugs we intend to for 1.3, and probably haven't found them all either (can you ever be sure?). However, we are confident that most major API changes are in and therefore want to give you access to a more stable platform than depending on trunk.
Migrating from 1.2
If you are coming from Wicket 1.2, you really want to read our migration guide, found on the wiki.
Downloading the release
You can download the release from the official Apache mirror system, and you can find it here
Read more on downloading Wicket here.