Alongside today’s release of iOS 7.1.2, Apple has also released OS X Mavericks 10.9.4 to the general public.
According to 9 to 5 Mac, OS X 10.9.4 includes the following improvements:
• Fixes an issue that prevented some Macs from automatically connecting to known Wi-Fi networks • Fixes issue causing the background or Apple logo to appear incorrectly on startup • Improves the reliability of waking from sleep • Includes Safari 7.0.5
OS X Mavericks 10.9.4 is available via Software Update in the Mac App Store.