This excerpt taken from the ATVI 10-Q filed Feb 8, 2006.
Online Content; Minimum Commitment
6.2.1 Publisher agrees that each Online Game Feature of a Software Title will be made available via Xbox Live for at least [*] following the respective Commercial Release of the FPUs of the Software Title in each Sales Territory in which is available (the Minimum Commitment). Publisher is obligated to provide all necessarysupport for such Online Game Feature during its availability. Following the Minimum Commitment period, Publisher may terminate Microsofts license associated with such Online Game Feature upon [*] prior written notice to Microsoft; and/or Microsoft may discontinue the availability of any or all such Online Game Feature via Xbox Live [*] prior written notice to Publisher. Publisher is responsible for communicating the duration of Online Game Feature availability to Xbox Live Users, and for providing reasonable advance notice to Xbox Live Users of any discontinuation of such Online Game Feature.
6.2.2 Subject to Section 10.3, Publisher agrees that Microsoft has the right to make Online Content other than Online Games Features submitted by Publisher available to Xbox Live Users for the Term of this Agreement. Publisher agrees to provide all necessary support for such Online Content as long as such Online Content is made available to Xbox Live Users and for [*] thereafter.