Should make it easier to import the information from your Outlook or Apple Address book over at GMail. No word on how this affects the sync options in Apple’s iSync.
Up until now, Gmail only supported some contact fields. Whenever someone imported their contacts from apps like Outlook and OS X Address Book, we used to put fields Gmail didn’t recognize into the contact’s notes section. Based on feedback from you, we added support for more contact fields (like birthday and website) and now store each of these fields separately, which makes syncing and round-tripping your data work better.