Colin,

All FPTVs and RPTVs have 4:3 CRTs.

If 20:9 was attempted, I think that it would be easier to either add anamorphic lenses, so simply design 20:9 LCD panels, which would not be nearly as difficult as making 16:9 CRTs for RPTV/FPTVs.

Or design the current 4:3 CRTS to have more sizing adjustment capability, which should be possible.

-Dean.