My quick response to the hardware thing: Of course you should go for upgraded components. This little box was designed in 2008. Time has passed. And, as is hinted in the OP, components become cheaper when they are produced in bigger runs. So if a somewhat faster processor/memory combo is available, for the same (or cheaper) price and with better availability, you'd be daft not to go for it. It has, actually, several benefits:
* Obvious one is obvious: There will be a bit more oomph in the box. It has been mentioned that "Oohh, the community might be fractured", but as has already been said, that ought to be very little. The same kernel and the same general OS means there ought to be no software incompabilities. Later customers might get more frames out of the most advanced emus, but that is not much of a fracture.
* Somewhat obvious one is somewhat obvious: Something to appease the screaming hordes of trolls. "It is outdated" - Well, then we up the spec, then. Might bring in some more customers who were spec-wary before.
* Not at all obvious one is...well: If you go through with it, it will send another message here: That the team behind the Pandora is not going away soon. I'd say that most people outside, looking at us, would think something like "Ok, it was possibly an interesting experiment, they bit off more than they could chew, and now they will hobble through the goal of delivering all promised machines and then go belly-up". Like so many other "startups". Doing something like this - "Ok, now a few years later, we still deliver (or possibly "finally", but that might be a bit frank
), and not only that: we update the specs with time - is a rather clear signal that you're still going.
In addition: If you also (which ought to be no problem, at least technically, if I understand you correctly) offer an upgrade path for existing owners, as has been suggested above, then we have another message. To the technically aware: that the pandora is indeed a sound design. To most vaguely aware people: That this is a company/community that tries to do the right thing, and that the pandora is not a technical dead end once it arrives. Or, to put it more bluntly:
Put that in your pipe and smoke it, iPhone {lastgen} owners
So, in short: Do it! Make good on the promise that it will be fully compatible. And by all means, offer some sort of upgrade path for existing owners - For maximum geek attractiveness, offer it both as "send it in and we will replace the board" and, for a somewhat lower price, "We send you a new board and trust you to install it yourself".