I just upgraded last night to fix a glitch I was experiencing with OS 4.X and Blackberry Messenger... I must say, it's terrific.... If anyone is on the fence about upgrading, I highly recommend it....
I've only been running 5.0 for a day now but here's what I noticed:
-New graphics/display of home screen icons
-My keyboard lock key now turns my screen off and locks the phone, which I really like. Previously, the keyboard lock when activated would just show the owner information but the screen would stay lit and timeout after the usual 30 seconds I have it set to
-New layout for pictures folder. When selecting a picture and choosing to send it as an email, it prompts you to choose what type of quality(resolution) to send the picture prior to sending which is nice
-Separate folders for SMS messages and regular messages (Email, app notifications, BBM notifications)
-New SMS screen layout, it's just one window now and looks very similar to the BBM screen layout... This is nice because it cuts down on the amount of SMS message clutter in your SMS folder. You don't have to view every received and sent message as it's own message notification.
-New layout for the Media player which looks nice
-Camera menu option icons look different and disappear when the track ball is inactive.
I'm sure there will be some other minor differences I'll notice in the near future.... But right now most importantly is the Blackberry Messenger problem I was previously experiencing appears to have been rectified....
Also no word on the improved battery life yet but I'm guessing it's better... I've had my phone unplugged for 7 hours now and have only used up 10% of my battery life... Minor usage today.