My initial message was that it was on backorder. It has now switched to this:
Status: Thanks for pre-ordering a shiny new HTC EVO 4G LTE, an email will be sent the second it ships. The launch date for this handset will be announced in the next few days, thank you for your patience. Delivery should occur within 1 to 3 business days thereafter. You may continue to track the status of your order on this web page. If you have questions, check out...
I'm feeling a bit better now...