9.0.1 FP6 IF1 is available for only W64, Linux64, and AIX64 platforms. 9.0.1 FP6 IF1 will be a requirement for the upcoming on-premise release of IBM mail support for Microsoft Outlook.
C&S APIs - If CalUpdateEntry adds an attendee for the series, only the first instance is updated
Meetings across DST boundaries from C&S APIs or IBM mail support for Microsoft Outlook (IMSMO) show bogus times if server is not in client timezone.
Cached profile documents causing high shared memory consumption during IMSMO long run
Domino 9.0.1 Fix Pack 6 Interim Fix 1 W64
Domino 9.0.1 Fix Pack 6 Interim Fix 1 Linux64