Tamron today has announced that some of their Di/Di II series lenses do not work on the new Nikon Z7 mirrorless camera (B&H/Adorama/Amazon) with the FTZ Nikon Mount Adapter. Tamron haven’t yet disclosed which lenses are affected.
Sigma USA just issued a press release that their Nikon F-mount lenses has no issue with general operation when they are used on the Nikon Z7 and FTZ adapter. Sigma didn’t say anything whether they will release native Z-mount lenses in near future.
Here is another interview with Nikon executive for the Nikon Z6 & Z7 full frame mirrorless cameras. Nikon Z7 is now already shipping. According to the interview, Nikon is also working on low end models of Nikon Z series mirrorless cameras, may be APS-C(DX) size, below Nikon Z6.