game, ranging from graphical issues to online connectivity problems; this update was included in a patch that also repaired issues found in the other games within The Orange Box. The updates released on PC and planned for later release on Xbox 360 include new official maps and game modes, as well as tweaks to classes and new weapons that can be unlocked through the game's achievement system. The developers attempted to negotiate with Xbox 360 developer Microsoft to keep the Xbox 360 releases of these updates free, but Microsoft refused and Valve announced that they would release bundles of several updates together to justify the price. Because of the cost of patching during the seventh generation of video game consoles, Valve has been unable to provide additional patches to the Xbox 360 version since 2009, effectively cancelling development of the console versions. On June 10, 2010, Team Fortress 2 was released for OS X, shortly after the release of Steam for OS X. The release was teased by way of an image similar to early iPod advertising, showing a dark silhouette of the Heavy on a bright green background, his Sandvich highlighted in his hand. Virtual earbuds, which can be worn when playing on either OS X or Windows once acquired, were given to players playing the game on OS X before June 14, though the giveaway period was later extended to August 16. On November 6, 2012, Valve announced the release of Team Fortress 2 for Linux as part of a restricted beta launch of Steam on the platform. This initial release of Steam and Team Fortress 2 was targeted at Ubuntu with support for other distributions planned for the future. Later, on December 20, 2012, Valve opened up access to the beta, including Team Fortress 2, to all Steam users without the need to wait for an invitation. On February 14, 2013, Valve announced the full release of Team Fortress 2 for Linux. From then to March 1, anyone who played the game on Linux would receive a free Tux penguin, which can be equipped in-game. Team Fortress 2 was announced in March 2013 to be the first game to officially support the Oculus Rift, a consumer-grade virtual reality headset. A patch will be made to the client to include a "VR Mode" that can be used with the headset on any public server. In April 2020, source