Autodesk Releases SP1 for AutoCAD 2013 and LT

Aug 18, 2012 - Autodesk released SP1 for AutoCAD 2013 and AutoCAD LT 2013. Does not apply to AutoCAD Civil 3D, AutoCAD Map 3D, or common installation of Design Suite products.

Autodesk released Service Pack 1 for AutoCAD 2013 and AutoCAD LT 2013 on Aug 18, 2012.

AutoCAD Only Almost

WARNING - The AutoCAD 2013 SP1 Update page currently states the Service Pack can be applied to Infrastructure Design Suite products.
This is probably an ERROR unless you have ONLY installed AutoCAD 2013 from the Suite.

This service pack is NOT listed on the AutoCAD Civil 3D or AutoCAD Map 3D 2013 Updates pages

This service pack should NOT be applied to AutoCAD 2013 vertical Design Suite products except as noted on the AutoCAD 2013 SP1 Updates page.
This includes AutoCAD Map 3D 2013 and AutoCAD Civil 3D 2013.
Vertical version Service Packs that include this ACAD service pack will be released at a later date.

The service pack fixes many mostly minor issues (see the readme).
AutoCAD 2013 SP1 also adds new anti-malware drawing variables to AutoCAD 2013 drawings.

Here's the link to the AutoCAD 2013 Updates page

To read more about the new anti-malware drawing variables visit this post on Without a Net.