Quite a lot There are over 300 changes in this release, although all of them are under-the-hood at the moment. You'll notice faster scans, better Identity Shield protection, more accurate license messaging, significantly improved malware cleanup, improved compatibility with several other security applications, reduced fuss with licensing/keycode application, a more seamless trial version, better behavior when upgrading from Webroot's 2011 products, some improved usability changes, and overall much better stability. We have several new functions coming soon, not the least of which being the business product and support for internationalization into several languages. Most users should receive this over the next 24 hours, although some groups are updated slower than others (namely retail purchased versions). You can always download the newest from the website directly if wanted. Let me know if you have any questions!