Regarding the lens , I read that this one is compatible with EOS 600D as well as with EOS 6D. I have a Canon SLR 600D and planning to add a Canon 6D to my kit. Can you please confirm it.

Is there a new version coming that the lens is not available?

Will this fit my EOS R with adapter without "reducing" the image section?

Can anyone tell me if this lens matches any of these serial numbers after May 11, 2015: 108281～108380, 109261～109270, 109315～109323, 109339～109374, 109392～109410, 109711～109852, 110053～ I have read that lenses of this type produced before this date do not work properly with my Canon EOS 80D.