Today I got an announcement from my ZA update service and it sounds suspicious to me.

"FREE UPDATE : NEW ZoneAlarm FREE Firewall 97 % fewer alerts. Stronger protection. Winner: PC Mag editor's choice.Click OK to DOWNLOAD THE FREE UPDATE NOW"

Hey, I know I it's free, coz I have the ZA Free-Firewall, so why telling me it's free.

Is this a trusted update ?