XDB from Marvell supports the Backstone (JTAG I/F instrument by Marvell available from distributors of Marvell for ~$500) and GTI's Guruplug JTAG I/F (listed for $39 on their site, that also includes the 8-pin cable for D2Plug).
The main issue here is that XDB application can be downloaded only from Marvell Extranet that requires establishig NDA.
Please go ahead and contact Marvell sales (Distributor in your area) and request access to PXA510 folder on Extranet.

Meanwhile, hoping that community can provide OpenOCD configuration to program the SPI NOR flash on D2Plug.

PXA168 DevKit now available from Globalscale as GuruPlug - Display (gplugD) may be another choice if UI is needed. Any TV with HDMI input can be the display.

[Back of a Monitor with HDMI port should just work fine, as both video and audio are streamed through the single HDMI cable.
No separate sound out, no sound in. Possible option via USB: http://www.geeks.com/details.asp?invtid=HE-280B
   - There are 4 external USB 2.0 Host ports (through a HUB device inside) and USB-2.0 OTG port. Both High Speed

Plan is to ship WiFi 802.11b/g/n USB Dongle as part of the DevKit. No BT.
No internal WiFi as it is a significant heat source and chip-antenna placement near metal would diminish throughput.

DevKit leverages the GuruPlug Server enclosure, but not the thermal and PSU issues.

No internal HDD, but plan is to ship 4GB Class 6 microSD card inside. (Will contain default uImage and Debian distro, apps, and rest will be storage)
Considering shipping an additional microSD (8GB Class 4 or Class 6 if not too expenssive) as part of the DevKit
ARMADA-100 does not have an integrated SATA controller.

Looked at VESA mount info but most of it concerns with mounting the TV/Monitor, not the accessories. Can you kindly elaborate on the suggestion?

ARMADA-100 Plugcomputer DevKitARMADA-100 Plugcomputer is capable of driving 720p60 (1280 x 720) resolution, and will also support 480p60 as required by the HDMI std.
Primary applictions are for UI on the TV screen. For a HDMI TV with 1080p capability, it is better to use Blu-ray player for watching video, for example.
For sure, UI content can include Video, Audio, Graphics, Annimation etc. and D1 resolution video play should be possible.
We have to strat with stable H/W and let the community "Breath the life with S/W" into it.
Always-on, Always-connected, Green-computing = Plugcomputer

Depends on who is the "End user":
End users of consumer devices need solutions, and Plugcomputer is an enabler that encourages developers to get access to H/W, hence the name "DevKit"
It has Linux Console interface and JTAG debug interface, for sure not something a "consumer" end user would use.

Yes, that is the plan. Thermal and power analysis and testing are currently underway.

Here is a picture:

NO WiFi or BT or ULP-Radio inside the gplugD --> too much heat --> External USB dongle for WiFi-802.11b/g/n based on 88W8786U
    (for details http://www.marvell.com/products/wireless/8786u.pdf
Currently, wireless KBD/Mouse with USB-HDI dongle work --> Evaluating pointer with trackball
    (for details  http://www.btc.com.tw/english/2-8-13mouse.htm#M961ATIII )

The CPU board is on the top surface and airgap will be filled with thermal pads.

The GuruPlug Display - DevKit is mainly for developers. For deployment as product, we are hoping that this vibrant community will help us with various use case scenarios.
We are sure that if the design is stable and reliable, it will be accepted. Thanks for the kind reminder about PSU.

After a brief introduction at CES-2010, ARMADA-100 Plugcomputer hardware is now validated. The new class of Plugcomputer will be introduced as "GuruPlug Display" (nickname "gplugD"). Powered by 88AP168 Applications Processor  http://www.marvell.com/products/processors/applications/armada_100/armada_168/pxa_168_pb.pdf, the gplugD will enable any TV with HDMI input port to become a Display Device.
Main features:
10/100 Fast Ethernet, 4 USB Host ports, 1 USB-OTG port, 2 microSD slots (one can be configured as JTAG interface, using debug interface board), Console through USB port miniB.
CPU/DDR2 clock speed optinos: 800/400MHz, 1066/355MHz, 1066/533MHz
512MB DDR2, 512KB Serial NOR Flash (boot initialization image, u-boot), 4GB internal microSD
HDMI output port

What would you do with it?