Passage: In December 2004, PalmSource announced a new OS strategy. With the acquisition of the mobile phone software company China Mobilesoft, PalmSource planned to port Palm OS on top of a Linux kernel, while still offering both Palm OS Garnet and Palm OS Cobalt. This strategy was revised in June 2005, when still no device with Palm OS Cobalt was announced. PalmSource announced it was halting all development efforts on any product not directly related to its future Linux based platform.With the acquisition of PalmSource by ACCESS, Palm OS for Linux was changed to become the Access Linux Platform which was first announced in February 2006. The initial versions of the platform and software development kits for the Access Linux Platform were officially released in February 2007. As of January 2011, the Access Linux Platform had then yet to ship on any devices, however development kits then existed and public demonstrations had been showcased.

Question: In what month was a new strategy announced?
December