Installed the update to 3.0.0.1 yesterday. Here is my breakdown of battery performance.
(All values rounded to 2 decimal places)
Time since last charge = 9 hours 40 minutes = 9.67 hours
Current battery level = 83% = 17% drained
17 percent / 9.67 hours = 1.76 percent per hour
100 percent / 1.76 percent per hour = 56.82 hours = 2.37 days
Before the update, I was getting roughly 3 days. At this point, I attribute the extra battery drainage to playing with the new Settings menu structure, setting up NumberSync again, updating apps, and re-customizing my shortcut widgets. I will report back in a day or 2 with my findings after I have settled back into my normal usage routine.