In a conversation with GamerTagRadio's Godfree, he revealed that all Xbox MVP's were able to get the upcoming Spring Dashboard Update early.
To answer some questions that people were having…
It will not increase your 100 limit Xbox GamerTag Friend List… but it will allow you to add up to up to 600 MSN contacts, and will merge GamerTags with MSN contacts if possible
Your GamerTag is not automatically synced to your MSN details, you are given the option to sign in with any name that you have. (So, you aren't stuck with an outdated MSN name that you used to make the XBL GamerTag with)