I think it's likely their product will reduce in price for fire sale, like the HP Touchpad.
At least with HP Touchpad you could flash the ROM and change the OS.
It is a difficult sell to have someone pay full price for a product when the manufacturer openly states they won't support it anymore, and may even reduce functionality in the future.
You can keep yours till the end of the return period and see if the price drops. Or maybe pebble will change their own, or open source their software (but now you paid full price for a product with no hardware support). Depending on where you bought, some stores have extended returns for the holidays.