In a nutshell, Umbraco v5 is a ground-up rebuild of your favorite CMS and is built on top of ASP.Net MVC 3. It will look the same and have all of the same great Umbraco ideas powering the new CMS but the underlying architecture has been completely upgraded.

The current arcitecture in Umbraco v4 - while still going strong - is over six years old. That's a lot in internet-years. Since the early days of Umbraco, a lot has happened both in terms of how you work with websites and the technology powering them. We felt that the oppotunities for making an even better Umbraco by far outweighed keeping the old architecture. After all, we've learned that people don't upgrade!

With v5 a new chapter will begin in the history of Umbraco, giving us the most modern CMS architecture possible. One that makes implementation even faster, makes it easier to integrate and maintain content from outside Umbraco and will set new standards in CMS flexibility. We've been working hard for the past 18 months and we're super proud of what we're about to put in the hands of the world's most friendly and creative community.

During CodeGarden 2011 we had a stream dedicated to discussing & presenting Umbraco v5. If you missed out on CodeGarden this year, or didn't get a chance to check out all of the v5 sessions, we've recorded them all for you! Each session contains a ton of information about Umbraco v5: what it's all about, why it's being built from the ground up, how it's being built and the architecture behind it:  Keynote, File,New, Mvc Application, Get Plugged in to Umbraco Jupiter, Deep Dive in to Jupiter Architecture, Awesome Hidden Gems in Jupiter, Panel: Why not to use v5, 0 To Hive in 45, Localization in v5