On Thursday (Dec 5) Microsoft announced the forthcoming content for Patch Tuesday – Dec 10, 2013.
Number of Releases: 11
Critical Security Updates: 5 addressing vulnerabilities in Windows, Internet Explorer, Office 2003/2007/2010, and Exchange Server 2007/2010/2013
Important Security Updates: 6 addressing vulnerabilities in Windows, Office 2007/2010/2013, Sharepoint Server 2010/2013, Lync 2010/2013, and Team Foundation Server 2013,
You can have Microsoft's security bulletins sent directly to you:
To receive automatic notifications whenever Microsoft Security Bulletins are issued, subscribe to Microsoft Technical Security Notifications.
Microsoft also hosts a webcast where they discuss the releases, typically the Wednesday after Patch Tuesday:
Microsoft will host a webcast to address customer questions on the security bulletins on Dec 11, 2013, at 11:00 AM Pacific Time (US & Canada).
You can also follow the MSRC team at @MSFTSecResponse.
Updates are typically released by Microsoft at 10am PDT (5pm UTC).
Configuring WSUS servers to synchronize relative to that time can be helpful in expediting availability of these security updates.