Extended Support will be available for Microsoft Dynamics AX 3.0 after Mainstream Support ends on January 13, 2009. Extended Support will be available until January 10, 2012. With this extension, Microsoft Dynamics AX 3.0 customers will benefit from the 10 years of support that is similar to the Support Lifecycle for other Microsoft Dynamics products.
We provide the following support during the Extended Support phase for Microsoft Dynamics AX 3.0:
Note: Extended Support will be provided for Microsoft Dynamics AX 3.0 only at a supported service pack level, per the Microsoft Support Lifecycle Policy on service packs.
More info here http://support.microsoft.com/gp/lifean37