Specs are up at:

http://www.apple.com/ipad/specs/

which shows display resolution as being 132 dpi, which is more than a netbook, but less than the 150 to 166 dpi of an iPhone or a Kindle or an e-Ink display.  One would need to check it out in person to make sure that one is happy with the resolution – some  people don’t seem to care at all about resolution, other people seem to be very sensitive to it.

10 watt charger is huge power compared to a Kindle, for those people who care about that aspect.

They said it supported epub in the announcement, but its not in the specs, so maybe that is only with the iBooks reader app.  It would be a bummer if iBooks is a tightly closed app like the nook reader!