Back when I still had my very first Android phone (Xperia Mini Pro - the first one), I could easily get 3 days out of it, with moderate to heavy use. Of course this involved rooting, ripping out junk apps, downclocking and restricting the CPU to half it's normal power and speed, and shutting down all radios except basic GSM when not in use.
But the result? 3 days of use (switching on GPS and 3G as REQUIRED), and heavy text messaging, and a comfortable 4-5 days if I just left it the hell alone (I got really involved in a computer game that week, it only got used as an alarm clock the entire time).
And now? With my Galaxy S2, when it was new, I was lucky to squeeze 2 days of similar use with similar modifications. It once bounced off 3 days when I hadn't used it at all, but it was only 72 hours and 3 minutes. Just pulling up the battery monitor was enough to knock it out. And from what I can tell, it's getting WORSE. My average now with the S2 and a 2 year old battery is 12 hours normal use, although I got 24 hours out of it this week because I was stripping wallpaper and left it sitting in the other room untouched.
The newer the phone it seems the lower the battery life. I saw an advert not long ago BOASTING about a 10 hour battery life! WTF?
If Motorola are trying to get a handset out with a decent battery in it, I applaud them. I doubt real-world numbers will be as big, but it's a step in the right direction.