I think it's pretty interesting! I was thinking the whole stylus thing was cheesy until I read this Engadget report:
A closer look at the HTC Flyer's screen, stylus, and Scribe -- Engadget
Phandroid report is different, and Rob was disappointed in what he saw:
HTC Flyer Falls Short With Android 2.X | Android Phone Fans
That said - HTC is already said to be coming out with a dual-core _Honeycomb_ phone - and given their update record, I wouldn't sweat the low revision on the as-demo'd Flyer just yet.