Microsoft CRM 4.0 and the Last Rollup?

Please note: Due to the low volume of fix requests for CRM 4.0, the CRM Sustained Engineering (SE) team will stop shipping CRM 4.0 rollups on a regular schedule after Update Rollup 21. CRM SE will service CRM 4.0 requests on an individual basis using our Critical on Demand process.
 
CRM SE will continue to evaluate the need for Update Rollups for the remainder of CRM 4.0’s supported lifecycle.  A rollup will be shipped if there is a significant increase in volume of fix requests or in the event that a rollup will benefit a majority of the 4.0 installation base.