XBOX360 March Update: When Is It Out

Are we going to see this so called March update for the 360 at the end of March or eariler. My bought Dead Or Alive 2 Ultimate the other day and it dosn't work hopefully they'll add it to the new patch.

It says it is a "mandatory" update. I'm not exactly sure how that is supposed to work..

http://news.teamxbox.com/xbox/10376/March-2006-System-Update-for-Xbox-360/

Probably upgrades the software that handles the downloading and installation of the updates themselves. And it's for XBOX LIVE! users so it's not an update that I read somewhere else. Going to have to start checking on information and how true it is.