USB-C hubs are (unfortunately) fairly common nowadays and Sony is now starting the game with the MRW-S3, a nice looking hub that controls a whole range of high-quality speckjes such as 100W USB-C PD and a UHS-II SD card reader that most do not use.
For each hub the main specification is what ports it offers and Sony has enough: there is an HDMI port for video (with support for 4K video at 30 fps), a USB-C PD port for connecting the power supply (up to a maximum of the aforementioned 100W speed), a USB-C and USB-A port for external devices and accessories, both suitable for the USB 3.1 Gen 2. Sony also says that its specification is the fastest hub on the market, with transfer rates of up to 1000 MB / s, at least for the USB-C port. And there is an SD card and a microSD card slot, both suitable for UHS-II cards.
Finally, there is a final USB-C port for connecting the hub to a computer with a supplied USB-C to USB-C cable, which is a nice touch – most hubs only offer an integrated cable or connector , while the individual cable leaves the room for users to replace it with a new cable if that part gets damaged, or a longer cable, if they need more flexibility.
There are a few question marks: for example, there is only one USB-A port, which is usually one of the main reasons for buying such a hub, but the addition of a second USB-C port for data (in addition to the usual for power) gives me hope that USB-C is finally gaining enough ground that a second USB-A port is not needed. There is also no Mini DisplayPort, which other high-end hubs offer.
Unfortunately, Sony has not yet announced the most important details for the MRW-S3: the price, which will probably make a difference in determining whether it is worth buying. But at least on paper, Sony seems to have supplied a high-end USB-C hub for more demanding use cases than the average hub.