According to latest rumors by SAR, the upcoming Sony a7R V will feature with a new 63MP full frame sensor. The old a7R IV has a 61MP full frame sensor. Also new a7R V will feature with a much faster image processor to improve the image quality.
Source also said Sony a7R V will have a lot of small improvements and the real highlight will be just one thing. The official announcement for Sony a7R V is on October 26th, 2022. Stay tuned for more info.
via: SAR