6 days later - I've still heard nothing... Anyone else try to sign-up and here anything back? I'd just like a confirmation I'm under consideration for attendance... At some point I'd need to buy some plane tickets...

I eventually just resubmitted my application. Got an acceptance to the workshop the next day! Assuming the first one had some kind of technical glitch...

Feel I should mention Apple actually selected me to visit HQ in Cupertino last summer to port this same app to Apple Vision Pro. Wish I could understand what caused the change in attitude about my app...