The buzz is swelling in anticipation of consumer-side announcements from Steve Jobs’ keynote address that will kick off the annual Macworld Expo here. Will it be the iPod phone or the iTV digital media server (name change is also expected)? Only Jobs and a select cadre of Apple execs know for sure. However, after the keynote hubbub settles and attendees wander onto the show floor, a revised sense of the Mac market may come into view. Among the booths filled with professional and consumer photo and video content creation tools and iPod gear – all expected and familiar Expo fare – will be an invasion of software and hardware solutions solidly in the small and midsize business camp.