Introduction Released in June 2013 at Apple’s WWDC, OS X Mavericks (version 10.9) marked a significant shift in Apple’s macOS naming convention—moving away from big cats to California landmarks. The Developer Preview 1 (DP1) was the first publicly seeded beta. For developers unwilling to dedicate a physical Mac or partition their drive, the VMware image of Mavericks 10.9 DP1 became a crucial tool for early testing and app compatibility checks.