It's always been random. They've never made a promise. Sometimes you get 10 years support like the Mac Plus, sometimes you get 5 years like an iMac G4. Heck Tig

It's always been random. They've never made a promise. Sometimes you get 10 years support like the Mac Plus, sometimes you get 5 years like an iMac G4. Heck Tiger "required" a built-in Firewire port.