Marriott heralded an industry first this past year when they introduced Elite Rollover nights that essentially allowed you to keep any extra nights over and above your latest elite level and use them towards your elite status for the following year. Earlier this week Marriott was please to announce via their Marriott Rewards Insiders forum that will continue to offer this great feature for the 2011 year. This means that any extra nights you have at the end of 2011 will count towards your requalification in 2012.
Source: Marriott Rewards Insiders