"Interesting" posts that don't make it to the front page are sometimes revived.
I once received an email asking me to resubmit a link to something considered interesting, as part of a kind of trial for whether it should be the norm on HN. The behavior is now built in, so you don't need to interact with the system for your link to come back if it's "interesting".
My understanding after talking with Rauchwerk today is that the boards are shipping out on the timeline they've outlined on the kickstater page. The only divergence from that schedule is that Kernel Hacker Backers will get their first board in 5-9 days and their second -- which is a bonus board -- in mid-October.