Bloomberg:

The company’s senior director of privacy Jane Horvath will be speaking on a “Chief Privacy Officer Roundtable” on Jan. 7, according to the CES agenda.

And:

Apple’s last major official appearance at CES was in 1992 when then Chief Executive Officer John Sculley gave a presentation at a Chicago version of the summit to introduce the failed Newton device.

Back in the day, Apple regularly appeared at conferences, highlighted by keynotes at Macworld Expo. Apple’s disappearance from Macworld and CES was a jarring change, but signified a change in controlling their message, with announcements at conferences and events that they controlled completely, including WWDC.