updated 4/29/2014 - New LANDESK program for extended XP support: http://info.landesk.com/XP-EOL-Campaign-LANDESK_Landing-Page.html
Background
Microsoft has ended support for Windows XP.
LANDESK supports Windows XP as a client at this time. Please reference this doc for latest info on support compatability: Supported Platforms and Compatibility Matrix for LANDesk Management Suite
Microsoft's current plan for Windows XP updates
Microsoft antimalware support for Windows XP
* We've received some inquiries about what "no longer supported operating system" means. To clarify, this mean that, after April 8, 2014, Windows XP users will no longer receive new security updates, non-security hotfixes, free or paid assisted support options, or online technical content updates from Microsoft.
http://blogs.technet.com/b/mmpc/archive/2014/01/15/microsoft-antimalware-support-for-windows-xp.aspx
Microsoft to extend Windows XP anti-malware support through mid-2015
Microsoft Windows XP EOL landing page:
http://www.microsoft.com/en-us/windows/enterprise/endofsupport.aspx
LANDESK's Post-EOL Plan for Windows XP Patch Content
For Publicly Released XP Patches
If Microsoft does release publicly available updates, LANDESK will continue to support these updates and release patch content for them.
For Customers with Microsoft Extended Hotfix Support for XP
LANDESK is offering custom patch support as a service to our customers with Microsoft Extended Hotfix Support to Windows XP
See this announcement for more info: http://info.landesk.com/XP-EOL-Campaign-LANDESK_Landing-Page.html
After a customer has joined the LANDESK Patch Content Extended Support program, they will be given a URL to upload bullentins and patches. LANDESK expects to release the content within 7 days of recieving the bulletins and patches.