Apple released OS X 10.9.5 on Wednesday. Though coming on the same day as iOS 8, Apple's patch notes don't mention iOS 8 compatibility. Instead, Apple said the update includes improvements to VPN connections, SMB server access, and Safari 7.0.6.
Apple's patch notes:
The OS X Mavericks 10.9.5 Update is recommended for all Mavericks users. It improves the stability, compatibility, and security of your Mac.
- Improves the reliability of VPN connections that use USB smart cards for authentication
- Improves the reliability of accessing files located on an SMB server
- Includes Safari 7.0.6
Apple has not yet published the standalone webpage for this update, nor has the company released the security notes for OS X 10.9.5.
The update is a 139MB download through the Mac App Store.