For August we will see eight updates, 3 rated as Critical by Microsoft and the remaining 5 rated as Important. This month's release is very similar to last years release for August 2012 with 9 updates and 5 rated as Critical.
One of the Critical updates affects Internet Explorer (IE) versions 6,7,8,9 and 10 and though Critical on workstation environments (Windows XP and Windows 7/8) this IE update is rated as Moderate on server platforms (Server 2003 and 2008).
If you have kept your systems up to date (mostly) the second Critical update will not affect you as it only applies to Windows XP desktops (all Service Packs) and Server 2003. Windows Vista/7/8.x and Server 2008 are not affected by the Remote Code Execution issue addressed by this Microsoft Patch.
It also looks like Exchange is the target of the other Critical update affecting Microsoft's Exchange versions 2007, 2010 and 2013 (including service packs.
We will have to wait to find out more about the remaining 5 Important updates, but my initial view is that these latter updates will affect more recent desktop and server platforms.
As always, it looks like these updates will require a restart to both your desktop and server platforms.
To find out more about this month's Microsoft Patch Tuesday update, look here: https://technet.microsoft.com/en-us/security/bulletin/ms13-aug