When people buy an E Ink eReader instead of one of the many affordable tablets available on the market, they’re likely looking for a somewhat pure eBook reading experience. As Barnes & Noble’s Nook business continues to flounder, however, the book seller will soon bank on new tablet features to help boost interest in its Nook Simple Touch lineup. According to a purported leaked email obtained by TechCrunch, Barnes & Noble plans to issue an update to its Simple Touch eReaders that will add a Web browser, email and a new store app to the devices. No other details were provided, though the update is expected to begin rolling out over the air (OTA) on June 1st. A copy of the leaked email follows below.