iOS 9.3 is coming in the Spring and will introduce Night Shift as well as a number of other new features.
Mac OS X Leopard 10.5 9A343 Seeded to Developers
Apple actually has itemized a few of changes to Leopard from the last seed, including:
- HIToolbox provides new HIRect/Point/Shape-based Window Manager API for resolution independence compatibility
- Tab support in Terminal
- Terminal now lets you save a multi-window configurations through workspaces which are available through the "Terminal" menu.
- QuickLook APIs have been updated
According to Apple, Leopard is coming "spring 2007".