Tony Northrup has a preview of his upcoming review within his free buyers guide (made freely available now in pdf at
Photography Buying Guide Giveaway | Northrup.Photo
Personally I'm a little disappointed as he is not applying the same criteria to all FF high res DSLR's equally. He was not very positive about the camera as a serious alternative to the Nikon or Canon systems. Primarily citing a lack of FF lens available and only having 5 FF lenses. This is inaccurate and fails to take into account the large legacy FF K-mount back catalogue, FA glass, DA*, DA Limited (many work fine in FF mode), FA Limited...
He was very critical of the 15-30 and 24-70 and regurgitated the belief that they are 1:1 copies of the Tamron of the same optical design. They use Pentax's own coatings (which impacts light transmission, flare and can affect sharpness) so it doesn't hold true that the Tamron 24-70 SP on D810 will produce 1:1 performance as the Pentax 24-70 on K1. The focus breathing comment is however very fair and there is focus breathing with the 24-70 particularly at the long end. I haven't ever really used a 24-70 that did not perform similarly. Certainly it's not significantly worse than the Canon. I feel like the comments on the 24-70 were out to lunch on build and image quality and do not line up with other reviewers experiences . DXO's testing of the Nikon variant suggests the Tamron variant is significantly better than the Nikkor 24-70 on a D810.
I wonder did he test this a bad copy of the Tamron and reuse his comments for the Pentax?
ePhotozine's review
https://www.ephotozine.com/article/pentax-hd-pentax-d-fa-24-70mm-f-2-8-ed-sdm-wr-review-29349 suggests that it's performance, particularly with respect to sharpness across the frame across focal lengths is excellent. My own experience is similar.
His other gripe was with respect to pixel shift - lack of Adobe support isn't strictly 100% at the feet of Ricoh. DCU while clunky does work with pixel shift motion compensation.
I've used motion compensated pixel shift with night cityscapes, blurring lights without any issue. I've also shot portraiture too and running water without artifacts (not handheld though).
The K1 implementation of pixel shift has a much wider shooting envelope than I feel that he alluded to. Tony unfortunately didn't mention the astro tracer, faster AF speed in APSC mode, composition adjust, build quality, weather sealing, the advantages of having 2 SD cards rather than CFlash and SD on competitors (size of cards, price of cards), faster focusing system etc... The smaller buffer is an interesting comment to make as the K1 provides a greater buffer than the 5dsr and he recommends the 5dsr for advanced wildlife photographers despite the smaller buffer :/
Anyway it's there if anybody wants a read