One of the biggest news is Versioning now makes it easy to save multiple sets of content such as articles. In this way it is easy to "jump back" to an earlier version of the article and this can be really useful when you manage to overwrite old.
Template Manager has received an uplift that it is now easy to duplicate and configure different templates.
Microdata support has been added so that indexes pages nicely in Google.
Jquery instead MooTools
MooTools is now completely unnecessary and all scripting is now written in jQuery also updated to version 1.10.2.
"Install from Web"
A very big new feature is the "Install from Web" is a feature which WordPress previously glorified in. With Install from Web, you can easily through the Administration Tool To install the Joomla directly from the JED (Joomla Extension Directory).
Tinymce editor has jumped to the version which is completely 4 Bootstrappad.
The 6e November released Joomla 3.2 in stable version
This is just a small part of the updates. Read more at http://www.joomla.org/announcements/release-news/5511-joomla-3-2-beta1-released.html