Picked up the new 13in today, fully charged it, while using wifi and 60%-90% brightness, I changed it a few times adjusting for ambient light conditions, I received just under 4 hours of battery life. I was using safari, youtube, downloaded a few movies, added some songs to itunes (didn't listen to them), installed a few programs, adjusted system settings, made a call on skype. I don't know what everyone here calls "normal usage" but I would call my actions "normal" for me at least. Sitting in a coffee shop writing an email on a barely lit screen with NOTHING else going on, i.e. no other applications in use, is NOT normal for me.
Im seriously wondering how much of a performance boost this new i5 gives....???
Use it a few times and report back to us. Battery life is always shorter the first time you use it.
And I'm serious about reporting back, I do want to know what people will be getting with the new laptop (not considering buying one. Just curious if the battery life is better, same, or worse than my 2010). But I can't really use that info and be fair as new batteries do need a charge or two before they get full strength so to speak.