From Homestar Runner Wiki
The Zappy XT6 is a computer that was featured in the DVD-exclusive email "Accent". It appeared in Strong Sad's projector film which showed (according to his projections and other data on his clipboard) what Strong Bad's voice would sound like five years in the future, had the decline of his accent kept up at the rate it had been.
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.
It can be inferred from the DVD's release date of June 5, 2007 - or the public viewing of Accent on April 26 of the same year - that the Zappy XT6 would appear sometime in early-mid 2012. This time has passed and the computer has not come into fruition (homestarrunner.com was also on a hiatus at this time), nor did Strong Bad lose any more of his accent since then.
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|Strong Bad's Computers|
|Current Computer: Lappier|
|Previous Computers: Tandy 400 | Compy 386 | Lappy 486 | Compé|
| Other Computers: Block | Zappy XT6 | Terminal D6 | Corpy NT6|