Success HK have posted news that they have a Widescreen Treamcast on their site.

Heres a screenshot:

“This is a portable Dreamcast with build-in 16:9 LCD monitor
The LCD screen is backlit and comes with a brightness regulator on the side
a volume regulator on the right side of the GD-Rom player
Perfect for installing in the car
Comes with Action Replay disc and memory card”

More Info at Success HK.