The battery life compared to my iPad 2 is rather dismal.
Yet I've never given much weight to battery run times on any of my pads, pods, MacBooks or phones. I'd rather set mine for max performance, 75% brightness & just enjoy it. Plugging in doesn't bother me at all.
The new iPad is very nice. A bit over hyped when it comes to the display, I'd categorize it as refined, not "Resolutionary".
For those that are still wondering, I cannot in good conscience say it's a big enough upgrade to be a must have. Keep enjoying your iPad 2, till you can easily afford to upgrade.
I bet next years will be cooler, have the charging bugs worked out, and be the one to have