Apple has seeded the sixth Developer Preview of the upcoming OS X Mavericks. The new preview is available via Software Update in the Mac App Store. This preview comes a few weeks after Developer Preview 5. Preview 5 added iBooks to Mavericks.

Also available today for developers are updated Remote Desktop apps, an updated SDK, and a new Safari 6.1 seed for OS X Mountain Lion.

Mavericks will be available for the general public this fall. We will be updating this post as changes in the new preview are discovered.

– A new “NYTimes” tab in iBooks