My iPad has the B3 update requested so it should download and install soon and then it's time to hunt for all the iPad specials
EDIT - Things I've found in B3:
First time setup now gives the option to "Upgrade to iCloud Drive" or "Keep Using iCloud Documents & Data" and a new page in setup dedicated to explaining iCloud Drive
New App Analytics screen in the first-time setup screen to share App crash information with developers.
Option to Enable or Disable Handoff.
New "Home Data" option in Privacy (may have already been there but I don't remember it). It has no icon.
Option in messages to change the Message History and to Automatically Keep Audio and Video messages.
Addresses with contact information provide a pop-up on the email at the top to create a contact or to ignore the sender.
New icon/animation for clearing notifications.