New features include Touch ID capability and direct access from Safari. Third party developers can build 1Password access into their apps. These options would have been impossible to offer before iOS8.
To use 1Password in Safari, the 1Password extension needs to be manually enabled within Safari. The procedure would be the same with any apps that offer Safari extensions. Safari extensions are new to iOS8.
These are the pro features:
Upgrade to 1Password Pro and add many great additional features:
◆ Multiple and Shared vaults
- Collaborate securely between team members
- Share strong passwords with the whole family
- Automatic sync keeps everyone up-to-date
◆ Additional categories including driver’s license, passport and many more
◆ Organize your data into folders or browse by tags
◆ Customize your items with multiple URLs, custom fields and more
1Password for iOS: Full Description, itunes.com
1Password 5 for Mac will be released soon, probably in conjunction with the release of OS X 10.10 Yosemite. I haven't heard about pricing, but I believe that the upgrade will be free for current users. I'd assume that upgraded versions for Windows and Android will be released at some point too.