The Xbox Live guys have pushed a new dashboard upgrade out, available now:

The March 2006 Xbox 360™ update will prepare your Xbox 360 console for future system and title updates. This free* update is available to all Xbox Live® members. Your console will be updated the next time you sign in to Xbox Live.

*Requires a broadband connection and an Xbox Live account.

Being that the last Dashboard upgrade bricked my Xbox 360, I am not to keen on installing one that doesn’t give details on what’s in the upgrade.