Here's a roundup of all the upcoming TTL/HSS Wireless Flash Trigger Systems from Sony, Phottix, Godox & Nissin for Sony cameras with Multi-Interface Shoe.
HVL-F43M Specifications, Camera Flashes & Lights
Flash light purchasing recommendation for a7r III?: Sony Alpha Full Frame E-mount Talk Forum: Digital Photography Review
Godox TTL Wireless Flash Trigger for Camera Bluetooth Connection 1/8000s HSS Control-Wheel Hotshoe Locking AF Assist Light - AliExpress
Godox V350S Flash for Select Sony Cameras V350S B&H Photo Video
Sony HVL-F28RM External Flash for Multi Interface Shoe
ST-IV+ Flash Trigger Photography with App Control (Leica)-Pixapro
FJ-X3 S Wireless Flash Trigger for Sony Cameras
Godox TT600 TT600S Speedlite Master/Slave Flash 2.4G Wireless Trigger System GN60 for Canon Nikon
Godox V1S Camera Flash Speedlite 1/8000s HSS with Godox X2T-S TTL Wireless Flash Trigger for Sony a7RII a7R a58 a99 ILCE6000L a7RIII a7R3 a9 a77II a77 a350 Cameras for Wedding
Godox MF12-DK1 Dental Macro Flash Kit for Sony Cameras (TTL Autoflash) – JG Superstore
Review: Godox Thinklite TT685S TTL (Sony)
Save $100 on Phottix Mitros+ TTL Transceiver Flash for Sony
Vello Off-Camera TTL Flash Cords for Sony Multi Interface Shoe