I remember the announcements back in May, but I still don't see an offering on their site. Can one really get a Linux instance on Power by the hour / month in SL? Even better in my case would be just a VPS, as a build node does need a monster server.
At the same time, if they are "using it behind the scenes", yet not offering it to customers, that would be very bad for brand image. Isn't the crux of the selling points server consolidation? Which of course is the same exact thing "cloud provider".
I still haven't tried it, but siteox.com has it though.
IBM is a enterprise behemoth. If you look at their sources of revenues, they focus a lot more on B2B with a few selected spinoffs designed to generate some public interest. Its not surprising they don't publicize a lot of things they do.