Announced at WWDC 2013, OS X 10.9 Mavericks will be coming with a great new feature that hooks into iCloud called Keychain. This gives users the facility to sync their saved passwords, credit card numbers, WiFi networking information and account between different systems all using iCloud. It's not necessarily the most glamorous new feature in OS X, but it's impressive, and incredibly useful to have.

The keynote continues, so come and join us for the liveblog!