With some delay due to problems with the download links, although my colleagues, Stefan Gossner and Joerg Sinemus have been much faster, I still want to post here now as usual and for my loyalty subscribers 
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Note:
It is now mandatory to install first the Service pack 1 for SharePoint 2010 and Foundation + June 2011 CU if not yet done!
Consider the dependencies with already installed Language Packs and maybe having Office Web APPs as well!
Please see the related information here: Service Pack 1 for SharePoint and Office 2010
This cumulative update is a post-SP1 hotfix and requires SP1 before installation!
Build 14.0.6129.5000 of the cumulative update package for SharePoint Foundation and
Build 14.0.6129.5003 for the Server packages.
MSF2010:
KB 2687566 Server package for Microsoft SharePoint Foundation 2010
SPS2010:
KB 2687564 Server package for SharePoint Server 2010 (contains also the MSF2010 fixes so you may need only this one package)
Project Server:
Updates for Project Server 2010
For Office Web Apps:
Please see here: http://technet.microsoft.com/library/hh685255(office.14).aspx
Service Pack 1 and June 2011 CU references:
- Service Pack 1 for SharePoint and Office 2010
- June 2011 CU for SharePoint 2010
- Post by Joerg Sinemus reg. SP1 and June 11 CU
- Post by Stefan Gossner reg. June 11 CU
- Patching Office Web Apps to SP1 and June CUs including SharePoint Server 2010
Further instructions and information:
After installing the packages, you may be prompted for a reboot of your Server! Please don’t forget to run the PSConfig Wizard anyway, even after reboot just to ensure that all updates has been applied completely and successful! As usual, you can use the command line on each server in Farm: “psconfig –cmd upgrade –inplace b2b -wait”
Q & A:
Q: Do I need to install the foundation packages first and then on top of it the server packages?
A:
No, you can apply directly the Server packages only because they’re containing the Foundation fixes as well. But for a consistent and “save” update process, we recommend always to install the foundation packages + the server packages. In future it could be possible due to any kind of changes, that a certain update level is mandatory to apply later CU’s or that some dependencies might exists between the two package bundles. Also there is already a lot to consider just about language packs etc. as described in my other post here.
Q: Is the service pack 1 a MUST HAVE before installing any other CU?
A:
No, not necessarily. You can apply any CU since RTM directly to SharePoint without having SP1. The service pack mostly adds extended features and includes also all fixes until April 2011 CU. But the recommended way is to install the SP! + the latest available CU on top to it just to stay save on your update process overall and for future.
NOTE!
For “User Profile Service Applications”: SP1 + June 11 CU provides increased performance and additional fixes etc. that we highly recommend to install if you are working with UPA/UPS!
Q: Do I need to install the updates or service packs for each language I have installed additionally?
A:
The Cu’s are usually global and will fit to mostly all languages, so there is no need here. If there will be a CU for a particular language not covered as usual, this will be provided separately.
For Service packs: Yes, each service pack is only for a single language. The SP-Language is relying on the language, your SharePoint has been installed initially. SO if this was English, then the English SP applies, If this was German, the German SP applies, a.s.o. – For any other language pack you have installed on top of SharePoint, you don’t need to install the Share Point service pack for this languages BUT you must install the language pack service packs according it! See more here.
Other related Links:
- SharePoint Server and Foundation 2010 Build numbers and updates since RTM
- Office SharePoint Server 2007 (MOSS) and Windows SharePoint Services 3.0 (WSSv3)
- SharePoint Portal Server 2003 and WSSv2
- All about updating MOSS and Language Packs
- The Mystery Behind SharePoint 2010 Patching by Jie Li
Related Update and resource Centers:
- Update Center for Microsoft Office, Office Servers, and Related Products
- Updates for SharePoint Server 2010 and SharePoint Foundation 2010
- Updates for SharePoint Server 2007 and Windows SharePoint Services 3.0
- Updates for Project Server 2010
- Updates for Enterprise Search Products
- Office 2010 Service Pack 1 – 5 Common questions regarding the Service Pack
- SharePoint 2010 SP1 and the June Cumulative Update for SharePoint 2010
SharePoint mysteries and more... 