Munster also suggests - though less confidently - a redesigned iMac may put in an appearance at the conference in San Francisco. Rumours circulating include an even slimmer case, the possible disappearance of the 17in model (with a compensating price cut to the 20in version) and perhaps even a black iMac, mirroring the way the highest-spec MacBook comes in black rather than white.{moscomment}