Please note: the original post mentioned the EOS R6 Mark II, that was obviously nonsense…
After the RF 15-30mm IS STM and RF 24mm f/1.8 lenses rumor (see here), a new one surfaced for a Canon RF 135mm f/1.8L USM lens.
Canon might be set to release the RF 135mm f/1.8L USM at the end of 2022. The lens was already rumored a lot on 5channel and there is also a patent for it. The source of the rumor is rather confident about its reliability.
[via Canon Rumors]