I installed the Windows Mobile 6.0 Upgrade today on my T-Mobile Dash. Haven’t dug into the new features yet, but the looks of it, are awesome. New Icons, sleeker design.
Found the link here
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T-Mobile Dash Windows Mobile 6 Upgrade!
Steve Novoselac's Blog 
One reply on “T-Mobile Dash Windows Mobile 6 Upgrade!”
I think that you can use the sideshow feature with this now .. (I think)
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