Same here regarding the 10GB, and have been on the wait list since April 1st.
Yep. Same here. I assume they are working through the waitlist. I'm going to give them a couple days to get it sorted before asking customer support about it.
Edit: My 10GB came through. Looks like release day latency.
(Though I haven't tried it. So far I haven't received the 10gb Argo credits described, despite being on the waiting list for yonks)