A few hours ago the Apple Numbers, Pages and Keynote suite was updated. In these new versions we do not find important changes in any of them beyond the typical improvements in the stability and performance of the applications.
In all of them since October 2014 they can be downloaded completely free with new Macs that meet the requirements. If you have a Mac that meets the requirements and doesn't include Pages, Numbers, or Keynote, you can order the apps through the Update Program.
Numbers reaches version 4.3.1 with a short note in the description of the update, stability and performance improvements. But is that updating Pages to version 6.3.1 adds these same description improvements and Keynote 7.3.1 same. It does not seem that new options are added in any of them but we will be attentive in case something new appears and we will share it with you all.
In any case, it is best to launch directly and update to obtain the improvements that Apple argue. In addition, all of them have also been updated for iOS users, so we imagine that they are being compatible with the new versions of Apple's OS, both in macOS High Sierra, and in iOS 11. To download the new versions you must go to the Mac App Store and click on the last icon on the top bar that indicates, Updates. By clicking on this icon we will see the new versions available for download and obviously all of them are free.