Apple has come out with a second beta of Mac OS X Yosemite for developers, but it's not clear whether this latest build will address the Wi-Fi problems that continue to affect an undetermined but apparently substantial number of users. With this build, labeled 10.10.2 , Apple didn't identify any specific problem areas it would like developers to focus on as they test the OS, according to multiple reports from news outlets and individuals with access to the release notes.