Been tracking this thread for quite a while now (and the blog post from before), and the wait for Jasper (for me at least) is now over . Just thought I'd chime in with info from my purchase.
360 Arcade holiday bundle (Sega Superstar Tennis included)
Purchased: 10pm 12-1-08
Location: Fry's Electronics, Las Vegas, NV
Team: FDOU
Lot: 842x
Last 5 serial #: 84205
Manufactured: 10-13-08
12.1 amps
New jasper style power outlet (2 section top bar)
175W power supply
Built in 256MB MU
XBOX 360 ARCADE SYSTEM VALUE BUNDLE 2008 E (on sticker on outside of box, yes, there is a sticker for the serial/manufacture info on the box)
Back of box has Lego Batman across top, Banjo Kazooie & Madagascar on bottom
No Kill-a-watt readings as I don't have one and am confident enough in all this new info that this is indeed a jasper.
Compared to my launch console (never did RROD ), this thing is dead silent & cool. Disk drive is loud, but I have the 120GB drive to install games onto, so not a problem, and even with the drive running, its still quieter than the jet engine that was the launch console.
Fry's has a bunch more Arcade jaspers. Pros where 840x 14.2 amps, Elites 843x 14.2 amps so wasn't sure on the jasper status on those.
Drew