Canon will be adding another wide-angle zoom to the RF lineup sometime over the next month or two. Expect to see a Canon RF 14-35mm f/4L IS USM as a little brother to the Canon RF 15-35mm f/2.8L IS USM.
The Canon RF 14-35mm f/4L IS USM uses the product code 4857C005.
Our Canon RF lens roadmap has had the RF 14-35mm f/4L IS USM on it for quite some time.
I don’t know the price at this time, but if I had to give a prediction, I’d say $1199-$1299 USD.