Sony A7S IV spec Rumor

Per CameraBeta on Weibo 

The upcoming a7s IV will use a new 24mp Exmor R sensor. The camera is currently in development and will be released later this year. The new cam will likely see a price drop from the previous generation expected to retail for between $2799 and $3099.  Sony α7S IV will use a 24-megapixel sensor] There are reports that the development of Sony α7S IV is already in progress. 

The new cam will support 6k oversampling 60fps 4k video, as well as 120fps 4k video in super 35 mode. The camera will no longer use the 9.44 mp evf but will be replaced by a 3.69 mp EVF.