The new R6 Mark II is faster and more capable than the R6 in most regards, and it addresses several of its limitations.
Canon R6 Mark II Review: A Well-Rounded Upgrade
Canon R6 Mark II Review - Worth Upgrading From the R6?
Canon EOS R6 Mark II: a real concentrate of power, 24 MP, 40 fps burst mode and improved AF and video modes.
Canon R6 Mark II Review: A Well-Rounded Upgrade
Canon EOS R6 Mark II Announced - 4K/60p Internal Recording, 6K RAW Output, Enhanced AF, and More
Putting the New Canon R6 Mark II Through Its Paces
Canon R6 II Firmware Improves Touchscreen. We Tested It
Canon EOS R6 Mark II review - Amateur Photographer
Boundless Creativity: Canon Announces the Canon EOS R6 Mark II Hybrid Full-Frame Camera
Canon EOS R6 Mark II review
New Gear] Canon R6 Mark ii : r/canon