Barnes & Noble recently notified both developers and customers that it'll be shutting down its Nook App Store, the UK Nook Store and Nook Video come March 15. The admission came via e-mail according to a recent report from The Digital Reader.

In the correspondence, Barnes & Noble confirmed that all existing apps previously purchased from the Nook Store will remain in users' Nook Library and will continue to be accessible on compatible devices. The company further notes that users will still be able to archive and un-archive Nook apps.

Barnes & Noble points out in a series of FAQs that the changes are being made so they can concentrate their focus and efforts on their core digital content business, Books and Newsstand, in the US. Devices affected by the changes include the Nook Color, Nook Tablet, Nook HD, Nook HD+, Samsung Galaxy Tab 4 Nook 7.0, Samsung Galaxy Tab 4 Nook 10.1, Samsung Galaxy Tab E Nook and the Samsung Galaxy Tab S2 Nook.

In the UK, the company has partnered with Sainsbury's Entertainment on Demand to ensure customers in that region have continued access to the vast majority of purchased Nook Books. Instructions on how to transfer Nook Books to a new or existing Sainsbury account will be e-mailed to users over the coming weeks, we're told.