"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
AirPods and AirPower: Everything We Know
Apple Superbowl Ad?
According to the German site, their sources imply that the Superbowl will bring something big from Apple.
Earlier articles did note that Apple was considering a 20th anniversary Ad for this year's Superbowl... but a subsequent (Jan 20th) CNN Money article revealed that Apple did not have "any plans to advertise during the Super Bowl to mark the ad's 20th anniversary."
MacGuardians has not been a particularly vocal rumor site, so their accuracy is unknown.