Apple's three-month exclusive on sales of the Apple Watch is over, so the device is finding its way onto the virtual and physical store shelves of a few new retailers. Now Best Buy, which was the first national retailer outside of Apple to sell the Apple Watch, is already expanding the device's availability. Apple Watches will be available at all Best Buy locations by the end of September, the company shared during an earnings call yesterday.

Best Buy had originally planned a much slower rollout. The store was going to offer 16 models of the Apple Watch in just 300 stores by the holidays, according to Best Buy CEO Hubert Joly. But because demand was "so strong," Joly says the company will accelerate its availability of the Apple Watch to all 1,050 stores.

Apple remains tight-lipped when it comes to hard sales numbers of the Apple Watch, so reports of its success or failure are still speculative. But Best Buy's eagerness to expand its rollout of the device clues us in to the retail success of the Apple Watch, especially since the company has only been selling Apple Watches in stores since the beginning of August.

The expansion of Apple Watch stock is apparently just the beginning. Best Buy is in the middle of a much bigger push to increase the presence of Apple at its retail locations around the country, according to Joly. On the same call, he said that Best Buy is working to add more display tables for Apple products, and will also start selling and offering AppleCare services and support in certain stores this year.