The new Conti GP5000 S TR (NOT the ghetto-ized all seasons) seems to be out, shipping, and in stock here
https://r2-bike.com/CONTINENTAL-Tire-Grand-Prix-5000-S-TR-Tubeless-28-700-x-35C-BlackChili-VectranBreaker.
Havent seen a rolling resistance test yet, but i suspect that it's as fast as the 32, that was as fast as the 28, give or take.
With a wide ass rim, the existence of this tyre just reset the gold standard for fast road bikes for most people, as far as i'm concerned. If you're 80kg, you've got no business being on 28C when you could be on wider tyres. I have 32 measuring 34mm at the back, i'm never going narrower again, and i'd love to test this 35 to see how it feels. The less is worry (punctures) and feel (vibration / comfort) potholes and bad asphalt, the better. Especially in the mountains, especially in spring / autumn when alpine / forest roads can be greasy, dirty, mossy, wet, gravely, and so on. I dont like that they don't have a tube version though, but i also dont think China is selling 35C TPU tubes, so maybe it's got to be tubeless.
And so, that frame looks very interesting.