- MsiPatchMetadata - The new MsiPatchMetadata table provides additional information about a patch - including whether it supports uninstall.
- PatchWiz.dll - PatchWiz.dll, the SDK tool used to create MSPs has been enhanced to support the new MsiPatchSequence and MsiPatchMetadata tables.
- Standard Command Line Options - MSI30 and update.exe support the same standard command line options to make it easy for administrators to control display, reboot behavior, install, uninstall, log generation and applying updates. Try msiexec /? after you install the RC1 bits.
- Smaller Patches for Assemblies - MSI30 adds support for smaller binary delta compression patches for assemblies.