This release represents two years of development effort and over 23,000 changes. The main highlights are the support for 64-bit applications and the new graphics based on the Tango standard. It also contains many improvements across the board and over 3,000 bugfixes.
This release includes a wide range of Direct3D improvements. Support has been added for SHA-256, SHA-384, and SHA-512 algorithms. MSHTML fixes. Support has been added for MP3 decoding on Mac OS X. widl improvements. typelib fixes. OLE storage improvements. Various bugfixes.
Better support for memory allocation debugging, improved MIDI support, a wide range of Direct3D fixes, OLEDB fixes (which should fix Clipart in Office), improved debugger support on x86-64, many MSI fixes, and various bugfixes.