As predicted on the project's road map months ago, Django 1.0 is out. Though this Python-backed web application framework has been around for quite a while, declaring it to be 1.0 is an important milestone - and a big accomplishment for a dedicated community of developers.
Django 1.0 includes quite a few features that are new since the 0.96 release that many sites have been using. These include improved Unicode handling, an improved and refactored ORM, cross-site scripting protection, Jython compatability, and more. The 1.0 release also comes with a promise of API stability and forward compatibility; as you move from 1.0 to 1.1, you won't face a moving target.
If you're interested in learning Django, the best starting point is the project's own documentation. There's also a handy cheat-sheet for more experienced developers.