From Homestar Runner Wiki
In the DVD exclusive email "Accent," the Zappy XT6 appeared in Strong Sad's projector film which revealed what Strong Bad's changed voice would sound like in five years. This futuristic computer is a hovering, light blue, translucent screen with circuitry imprints on it and a logo on the bottom left. Below it is a holographic keyboard which makes cosmic sounds when Strong Bad types. The "XT6" in its name is a reference to 20X6.
 Quick Facts
Interactive Feature: Unknown
Font: Square721 BT
Release Date: Appearing in a DVD Exclusive of strongbad_email.exe Disc Five, which was released June 5, 2007, it can be inferred from the email Accent, in which the Zappy appears five years into the future, that it would appear around the time of June 5, 2012.
|Strong Bad's Computers|
|Current Computer: Compé|
|Previous Computers: Tandy 400 | Compy 386 | Lappy 486|
| Other Computers: Block | Zappy XT6 | Terminal D6 | Corpy NT6|