It's possible V6 will happen next year, but not until after the Chinese New Year at the absolute earliest. That would put it at least March, but quite possibly later.
Type C support is frustrating. If you read or watch any of the "what is Type C?" content intended to inform consumers (e.g.
this video or
this article), it's billed as this great new standard that supports up to 100W of power delivery, twice the speed, even Thunderbolt 3. The problem is, none of that is inherent to Type C, which is just a connector, but rather are part of USB 3.1 Gen 2. And the problem there is that USB 3.1 Gen 2 is supported by literally only a couple of mini-ITX motherboards that use a new onboard header. It's been a couple of years now since this header first showed up on some ASUS motherboards, but it hasn't caught on at all with other motherboard makers, or even ASUS themselves on their latest boards. My own theory about that is that they're waiting until 3.1 Gen 2 is integrated into the chipset, because right now I believe it requires a separate controller.
So that leaves us with the following choice: we can add a Type C port, but it will have to run off the old 19pin USB 3.1 Gen 1 header, which doesn't support any of the new stuff. Once boards with the new header come out (assuming that happens), cases with the old 19pin Type C cable will need to be upgraded to take advantage of it, or else become obsolete (if the 19pin is entirely replaced). So incorporating Type C right now feels like an interim solution and a half measure, at best, with a limited lifespan and none of the improvements that it's purported to include.
Does that seem worth it?