Quoted from XPinPinball:

We very much are still in business! Last year XPin teamed up with Big Daddy Enterprises and since that point, both of us have been busier than ever!
With any type of joining, changes have occurred. We took some feedback from our customers and made some changes to the website that better suited this hobby. We also have added to our reseller offering and a few new products.
XPin sales have more than TRIPLED since the team up. This is what happens when you have successful product. Not including Todd at Big Daddy, XPin is still a family operation, I just didn't foresee the growth this last year and some things have lagged.
To address the DMD question, I should have them in stock in early August. Just like the rest of the electronics industry, chip shortages have impacted XPin products. I have had to respin several boards to address these shortages as well as change the direction of some of the new designs because of them.
A lot is happening. We definitely have not EXPIRED!