First and foremost, the big 2.0 update of 1Writer optimizes the app for iOS 8. The app's iOS 8 optimizations include Touch ID protection, iCloud Drive integration, and inter-app document picker support.
Moreover, 1Writer for iOS 8 features a Safari share extension, which lets you save the current URL, page title and selected text to 1Writer, and a Today widget, which lets you access your recent documents right from the Notification Center.
The update also brings the ability to assign most used Actions as quickly accessible buttons on the extended keyboard row. Speaking of which, the extended keyboard row is now optimized for landscape mode on iPad, iPhone 6, and iPhone 6 Plus.
Last but not least, 1Writer 2.0 features native resolution support for iPhone 6 and iPhone 6 Plus.