Mac World San Francisco without Steve Jobs Keynote?

While the MacWorld will open its door in about 3 weeks; the current program does not mention any inaugural keynote usually delivered by Steve jobs. For the time being, David Pogue will give a presentation during an opening session, that's all.
Of course, rumors are back regarding Steve jobs health, to try to explain why there is no keynote this year; however, it should not necessarily be linked. Since couple of years, Apple decided to reduce or stop its contribution to major Mac events worldwide. Chronologically, Apple stopped participating to the mid-year MacWorld on the East coast, leading to its "death", as Apple decided to strongly advertise its own event: the Mac Worldwide Developer conference (WWDC), then this year, Apple did not contribute to the European Mac Event in Paris; the Apple Expo renamed "REMIX".
So, we would not be surprised to see Apple reducing its involvement in the forthcoming MacWorld San Francisco, as such events are now considered by Apple as "Old school". Adobe will not be present at the MWSF, as well as other major contributors, and this might well be linked to the absence of Steve jobs. IT does not mean that we will not see Steve Jobs anymore in public event or show. He will certainly keep delivering keynote at the WWDC as well as leading introduction of new products during some special events organized by Cupertino with elected news network invited.