IBM recently released a Technote describing compatibilities with current and further Lotus Notes products on the new Microsoft’s client operating system Windows Vista Business, Enterprise and Ultimate.
Summarized all Lotus Notes releases from version 7.0.2 onwards will be supported. The next maintenance release (7.0.3) will be fully tested as well as the next new major release of Notes 8.
At this stage there will be no support for the next planned maintenance release of Lotus Notes 6.5.6.
The Technote currently describes only one known issue running Lotus Notes 7.0.2 on Windows Vista.