We've included only e-readers (and one tablet computer) that are either developed by old media companies or have gone out of their way to partner with them; think of this as a compilation of would-be media saviors dressed up as gadgets.

Maker: Barnes & Noble (the retailer)
Name: E-Reader
Old media tie-ins: Books from Barnes & Noble (the publisher); access to books scanned by Google Books; a B&N e-book store. (More)

Maker: Apple
Name: Apple Tablet (unofficial)
Caveat: A tablet computer is much more capable than an e-reader, usually offering the resolution, sound and video capabilities of a laptop computer along with a full-color display.
Old media tie-ins: Apple is in content talks with the New York Times, a large magazine group and at least two textbook companies, sources told our colleagues at Gizmodo. (More)

Maker:Sony
Names:Reader Touch, Reader Pocket
Old media tie-ins: Sony has a great feature that will let you check out e-books from one the oldest distribution mediums out there: your local library. Publishers can't be thrilled with "Library Finder," to say nothing of Amazon or Barnes & Noble. Oh well!

Maker: Plastic Logic Ltd.
Name: Plastic Logic Reader
Old media tie-ins: Content deals with Gannett Co.'s USA Today and Pearson PLC's Financial Times. Digital bookstore from Barnes & Noble.

Maker: Amazon.com
Name: Kindle DX, Kindle 2
Old media tie-ins: e-Books — from fiction to textbooks — sold by Amazon; a variety of newspapers, including the New York Times; a variety of magazines, including Time. Non-participating newspapers, including those owned by Rupert Murdoch's News Corp., have complained about the paltry 30 percent cut of revenues they were offered for sales on the device.

Maker: iRex
Name: DR800SG (catchy!)
Old media tie-ins: Books from Barnes & Noble's e-book store. B&N gets around.

And, bringing up the rear, there are the media companies whose devices are, for now, mostly talk.

Maker: Hearst Corp. and FirstPaper LLC
Name: Unknown
Old media tie-ins: Would presumably include content from Hearst newspapers like the Chronicle-s in San Francisco and Houston and from magazines like Esquire and Cosmopolitan. There has been talk of a hardware device developed by Hearst and, more recently, of an open software platform developed with FirstPaper.

Maker: Time Inc.
Name: Unknown
Old media tie-ins: There are conflicting accounts over whether Time Inc. is interested in making this device. Former Valleywag Owen Thomas of NBC Bay Area obtained a June 2009 presentation indicating plans to finish a prototype this year; Peter Kafka's sources at All Things D said the magazine division of Time Warner is interested in creating a virtual store rather than a physical device. Either way, the company is said to be seeking partnerships with other magazine publishers — Condé Nast, Meredith and Hearst, according to the documents reviewed by Thomas.

(UPDATE: Added Sony Reader due to Library Finder feature.)

(Pics via Gizmodo unless otherwise noted)