Wait, so once the numbers on the repebble preorder page are gone there's no more? I was holding out due to not having the spare cash to pre-order but didn't realise I'm missing my only chance!
Core 2 Duo was possible because they were able to dig up a supplier with a bunch of leftover Pebble 2 cases. Once they're gone, that's it.
The Time 2 is a new design so that's less limited. I believe there are more batches coded into the website behind whatever is shown currently.
My guess is that if all goes well the Core Time 2 is the future of the company and there will be more of those... Eventually... If things go well...
But the Core 2 Duo is using old Pebble 2 stock parts so there are probably only be so many that can be produced in any quantity.
I pre-ordered one of each, but I'd recommend going core time 2 if you want a good time. The Pebble 2 was/is an amazing watch, if you are comfortable replacing the rubber buttons, because they will fail eventually.