anon helix lens 2010

Hey guys, I've got the Anon (Burton) Helix goggles (actually, I have a couple of pairs). Anyway I'm pretty sure they're both the 2010 model. Does anyone know if the lenses change over the years for these? Can I buy a Helix lens from here Helix Goggle Lens | Anon and will it fit? Cheers, Eddie