The wotlk patch 3.1.3 download mirror has been released at wowwiki.com. This incremental size is about 7 mb. Goto wowwiki to download them.
Wotlk Patch 3.1.3 Download
Wotlk Patch 3.1.3 Patch Notes
Rapidshare Links for Wotlk Patch 3.1.3
3.1.2 to 3.1.3 Incremental Patch
File Name: WoW-184.108.40.20601-to-220.127.116.1147-enUS-patch.exe
WoW Moviewatch: Black Angel
10 minutes ago