New Junk E-mail Filter definitions have been made available for all supported Outlook versions.
Outlook 2003 will no longer get any Junk E-mail Filter updates anymore as it is out of support.
Download: Update for Microsoft Office Outlook 2007 Junk Email Filter (KB2880505)
Download: Update for Microsoft Office Outlook 2010 Junk Email Filter (KB982726)
Download: Update for Microsoft Office Outlook 2013 Junk Email Filter (KB2760587)
Note: These updates are also offered via Microsoft Update or already installed automatically for you when Microsoft Update is configured to also update other Microsoft applications.