updated 07:25 pm EDT, Thu April 22, 2010
New features still unclear
Just weeks after Apple released Mac OS X 10.6.3, the company is already said to be preparing to test early v10.6.4 builds, according to iPhoneinCanada. The first test builds of v10.6.3 arrived in January, two months after the v10.6.2 public release.
New features of the fourth Snow Leopard revision remain unknown. The recent release provided improvements to QuickTime X, OpenGL support, 64-bit performance with Logic Pro 9 and Main Stage 2, and several other minor changes.
The release schedule for v10.6.4 is also unclear, although the public version is expected to arrive sometime in the summer.