PhotographyBLOG has completed their review of the Canon EOS 5DS R, which has started shipping in small numbers. They came away impressed with the resolving power of the new 50.6mp sensor and highly recommend the camera.
I suspect we're going to see 20 reviews over the next week for the EOS 5DS and EOS 5DS R, we'll likely be putting links to those reviews in a single post.
From PhotographyBLOG:
The sheer level of detail that can obtained from the 5Ds and a high-quality lens like the EF 70-200mm f/2.8L IS II USM is difficult to ignore once you've experienced it, though, so if you can commit both financially and in terms of time to the Canon EOS 5Ds, we'd whole-heartedly recommend it.
Read the full review | Canon EOS 5DS R: Adorama | B&H Photo | Amazon