The EOS R8 Mark II is real, a 300-600mm may be weeks away, and the…
Canon EOS R Firmware v1.3.0 Released (adds RF 24-240mm F4-6.3 IS support)
Canon released firmware version 1.3.0 for the Canon EOS R.
Nothing to write home about. Canon EOS R firmware v1.3.0 adds support for the RF 24-240mm F4-6.3 IS lens.

