RE: If you go the Sametime 8.5.2 now, you're locking yourself in... Ben Williams 22.Sep.14 09:39 AM Lotus Notes General All ReleasesWindows
You're right. I think though for customers that are running the basic entitlement with little thought for meetings, STProxy etc then 220.127.116.11 is their smallest and most appropriate bet. If they have been running 8.0.2 or previous for this long since 8.5.x and 9 have been out then running for longer on 18.104.22.168 when ST10 (or whatever it will be called) is released will not worry them too much.
At present they have a choice to avoid DB2 and WAS so why not take it until they are forced to upgrade when it goes out of support in a couple/few years time?