SInce last tuesday, 12th of June 2013 the bi-monthly cumulative updates are released for SharePoint Server 2010  and  SharePoint Foundation (aka WSSv5).

2013-07-11 -> <UPDATE>!!
After the initial release of the previous announced June 2013 CU's for SharePoint 2010 and Office 2010, an unexpected issue that affected several Office products led to
removing the hotfix download and packages.

The new released product fixes are now avalible!

NOTE!

The KB articles have changed and are different now from the initial releases!
Download links should work already but KB's may be delayed!

If you previously have already downloaded the first set of fixes, please ensure, that you re-install the new and fresh downloaded Packages again!
</ END UPDATE>

Please find below related information:

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: http://blogs.technet.com/b/steve_chen/archive/2011/06/07/3433939.aspx

This cumulative update is a post-SP1 hotfix and requires SP1 before installation!

Build 14.0.7102.5000   14.0.7102.5004

MSF2010:
KB 2817392   KB 2817552 - Server package for Microsoft SharePoint Foundation 2010

SPS2010:
KB 2817363   KB 2817527 - 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
KB 2817530 Download June 2013 CU for SharePoint AND Project Server

For Office Web Apps:
Please see here: http://technet.microsoft.com/en-us/sharepoint/ee748587.aspx

Service Pack 1 and June 2011 CU references:

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.

Ee721049.note(en-us,office.14).gif 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:

Related Update and resource Centers: