The Microsoft Dynamics CRM Sustained Engineering (SE) team released Microsoft Dynamics CRM 4.0 Update Rollup 15 on Thursday, January 13, 2011.
The links below will take you to the necessary information about Update Rollup 15.
General details about Update Rollup 15
Update Rollup 15 is cumulative. However, the Update Rollup 15 CRM Client and Data Migration Client packages require Update Rollup 7 to be installed. For all other CRM components, you do not need to install any previous Update Rollups prior to Update Rollup 15.
The Update Rollup 15 download contains updates for the 40 supported Language Packs. Prior to installing the Update Rollup 15 Language Pack, you must install the original Language Pack. If you have Language Packs installed, you should:
1. Download the Update Rollup 15 Language Pack
2. Install the Update Rollup 15 Language Pack
3. De-provision the Language Pack
4. Re-provision the Language Pack
How to get support for Update Rollup 15
For support, please contact Microsoft Product Support. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site: http://support.microsoft.com/default.aspx?scid=fh;[LN];CNTACTMS.
Note: In special cases, charges ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.
What about the German language pack update? Is it missing or aren't there any updates?