Yes its Nov 16, but only in the US and Canada

Yes

Pretty sure there is no preorder. Valve mentioned units will ship out on the same day orders are going to be opened up (16th). A few YouTubers like LTT erroneously made a statement about preordering the device, but it’s clear by now that option isn’t even on the table. That’s just a result of YouTubers getting early access to film content and their information not always being accurate (either due to making assumptions or plans changing by the company).