I've looked at G15 Ryzen - it's USB 3.2 and sould out - so no USB 4.0 and limited availability like I said. I don't have any inside scoops into this industry but it could easily be that they are putting the new/untested parts in to lower tier products and reserving top tier ones for the tested configuration with a partner they know can deliver. Put it simply - X1 with AMD would probably sell out in a week, then they would be stuck with people waiting for that one over Intel, and they would cross Intel who still supplies them the majority of chips - sounds like a lose-lose to me.

I'd like to get a top tier AMD ultra portable for sure (eg. a Surface Pro) but AMD seems completely owhervelmed by demand in all areas and they prioirtise laptops the lowest (from their own release timelines and previous statements)