Updated rumored Nikon Z6s/Z7s (or Z6II/Z7II) mirrorless camera specifications

The new models could be called Z6 II and Z7 II instead of Z6s and Z7s (still not sure)
Incremental update to the current Z6/Z7 models
The camera shape is almost the same as Z6/Z7
Same sensor as in the Z6/Z7
Same EVF as Z6/Z7 (previous rumors indicated EVF with 5.76 million dots, the current Z6/Z7 have EVF with 3.69 million dots)
Improved AF (Face/eye/animal detection)
Dual EXPEED processor
Will use the new Nikon EN-EL15c battery
USB power
Dual memory card slots: CFexpress and SD (XQD/CFX type B, SD-UHS-II)
Faster frame rate
More buffer memory
4k 60p video
More new video features
Improved user interface
Support for vertical grip with release button/controls (optional accessory)
Improved functionality expected with firmware update after release
The expected announcement is around October
The Nikon Z6s will be the last Nikon camera with a 24MP sensor
Higher prices than the current Z6 ($1,797) and Z7 ($2,497) models