Well, you can't sell what you don't have. At least not for long.
"Intel Arc A5 and A7 desktop cards will start to ship in Q3."
Right, that means they should be going out the door now or very soon, which also doesn't seem to be happening.
I'm not sure how late one can be to this party, but it looks like it is so close to being over.
Again, if I needed a decent card right now I sure would not wait on intel. There are boatloads of GPUs out there for a great price, with drivers that are actually very good(the 6600 is still in a really sweet spot for the price, and sketchy AMD drivers are long in the past).