OS X Mavericks Software Update 10.9.1 Build 13B40
Installation using the OS X Software Update Seed Configuration Utility Note: Installing this Utility will NOT prevent you from seeing all other Updates available to you. [...]
Mavericks 10.9.1
Apple Seeds New Build of OS X Mavericks 10.9.1 Build 13B35
Apple released an updated version of OS X 10.9.1 for developers recently and to AppleSeed members, which carries a build number of 13B35. The first version of 10.9.1 seeded [...]