I asked, and my sources came through. I now know the announcement date for the Canon EOS R5, Canon EOS R6, and new RF mount lenses.
The big day? The official announcement will take place on or around July 9, 2020!
Canon products being announced on July 9, 2020
Canon EOS R5
Canon EOS R6
Canon RF 50mm f/1.8 IS STM
Canon RF 70-200mm f/4L IS USM
Canon RF 85mm f/2 Macro IS STM
Canon RF 100-500mm f/4-7.1L IS USM
Canon RF 600mm f/11 DO IS STM
Canon RF 800mm f/11 DO IS STM
Teleconverter RF 1.4x
Teleconverter RF 2x
The image below seems to be missing a couple of lenses, most notably the RF 70-200mm f/4L IS USM and the RF 50mm f/1.8 (I think), so these probably won’t ship until Q4 of 2020.
The same source has told us that the Canon EOS R6 body will ship in August, and that the Canon EOS R5 won’t begin shipping until September. Ship dates have been a moving target thus far, but that falls in line with my original leaks that the EOS R6 would...