While we don't have a date for the public release, Apple has taken a concrete step toward shipping OS X 10.10 by seeding Yosemite gold master to developers

On the last day of September no less. Apple is widely expected to ship OS X Yosemite in October, as we as updated Macs and iPads. While we don’t have a date for that, the Cupertino, CA company has taken a concrete step toward shipping OS X 10.10 by seeding Yosemite gold master to developers.

So developers, developers, developers fire up the Mac App Store app and click updates (Command + 5) to find OS X Yosemite Gold Master (14A379a).

Though more new will certainly be uncovered as Yosemite Gold Master testers dig through this seed, two things immediately stand out: 1.) the Trackpad instructional videos inside System Preferences > Trackpad have been updated for OS X 10.10 and 2.) Yosemite Gold Master includes a patch for the most common variant of the Shellshock Bash bug vulnerability.

While we don't have a date for the public release, Apple has taken a concrete step toward shipping OS X 10.10 by seeding Yosemite gold master to developers

For what it’s worth, Apple delivered Shellshock Bash Updates for OS X Mavericks, Mountain Lion and Lion.

Apple is also seeding Xcode 6.1 Gold Master to developer. For the uninitiated, Xcode is Apple’s integrated development environment for both OS X and iOS — important stuff!

Also, members of the company’s AppleSeed public beta testing team have received invitations to download OS X Yosemite Public Beta 4 (14A379b). What is the difference between the Gold Master’s 14379a and Public Beta 4’s 14A379b? A good question and, if you know, please share!

Lastly, with the OS X Yosemite public release a week or three away, you need to get ready now. So, ask yourself, “Is Your Mac, Are Your Apps Yosemite Ready?

Sources: 9 to 5 Mac, MacRumors, AppleInsider