iOS 9.3 is coming in the Spring and will introduce Night Shift as well as a number of other new features.
iWork for iCloud Updated With Interactive Charts, Improved Collaborative Capabilities
Larger documents, up to 1GB in size, can be edited, and larger images up to 10MB in size can be added to documents. Chart formatting is now available in all three apps, and there are new color options.
Keynote has also gained the ability to show and hide slide numbers, while Numbers now supports alternating row colors in tables and the ability to export to CSV. Pages supports exporting to ePub, object layering, and inserting and editing inline tables.
The iWork for iCloud software is available to all users for free, and it can be accessed through Apple's iCloud.com website.