Hi Dennis,
These bikes/frames are being offered with the full manufacturer warranty, which you can read here. I honestly don’t know what they are going to do in terms of stocking warranty replacement frames going forward, but based on my experience with the people running the company I believe they can be expected to make good on the terms of that warranty.
The new ownership of Diamondback also recently purchased Mavic, and reading between the lines, they have serious plans and ambitions to be a significant player in the high end bicycle space moving forward. Part of doing that is taking care of your customers.