From: eLinux.org
From http://www.marvell.com/products/embedded_processors/developer/kirkwood/sheevaplug.jsp:
The SheevaPlug is a development platform, targeted for use as a plug computer, and designed to run network-based software services. It features a Kirkwood Series SoC with an embedded Marvell Sheeva™ CPU core running at 1.2 GHz. This device connects to the network using GbE, offers desktop class performance, and can be used to replace a PC-based home server for many applications. Peripherals connect using the included USB 2.0 port.
The development kit is enclosed in a plastic case that also contains a universal power supply. For developers a USB-based debug connection is included to enable simple debugging and reprogramming.
Pictures of the internals can be found at http://www.cyrius.com/debian/kirkwood/sheevaplug/gallery.html
Linux variants supported or in the works:
You can order a sheevaplug for USD 99 from http://www.globalscaletechnologies.com/p-22-sheevaplug-dev-kit.aspx
Documentation can be found at http://www.marvell.com/files/products/embedded_processors/developer/kirkwood/SheevaPlug_DocumentationPackage.zip
"Its hardware design is completely open -- everything from schematics to Gerber files will be available on a website ... volume pricing could fall to $50" 1(#cite_note-1).
Specification is not clear, No JTAG/SDIO
Preorder: USD 79, retail price: USD 99.
http://www.highseclabs.com/sheeva_plug_sp1100.html
Only 128 MB RAM, no JTAG/SDIO
http://www.ctera.com/home/ctera-cloudplug.html
No further information available