Barnes & Noble Inc. will unveil a new electronic book reader later this month, the bookseller told analysts and investors on Wednesday, according to a federal filing released after the close of trading.

The bookseller's stock had jumped 14.3% on Wednesday to $12.03. A Barnes & Noble spokeswoman declined to comment beyond the 8-K filed with the Securities and Exchange Commission, which contained one sentence of text to comply with disclosure rules, except to confirm the meeting took place in New York City. She declined to say when during the day the meeting took place, or when specifically executives mentioned the forthcoming launch.

The filing said simply that the company, in the meeting, "indicated it expects to make an announcement on May 24, 2011, regarding the launch of a new eReader device."

One possibility is Barnes & Noble will release a more powerful combination tablet and e-reader, perhaps running a more advanced software like Google Inc.'s Honeycomb software. Honeycomb is a version of the Android operating system Google created specifically for tablets.

Last month, Barnes & Noble said it is upgrading the software of its popular Nook Color e-reader, giving the device a newer version of Android. The Nook Color, which has a touch screen, will now allow users to download free and paid applications, like the popular game Angry Birds, provide greater email functionality and allow users to play Flash videos, among other features.