We've just released an update for Wikipedia for iOS to the App Store[1]. 

This version includes support for iOS's Dynamic Type setting, which allows users to increase the size of text, not just in articles, but of buttons and other UI elements. This is a major piece of the accessibility work we kicked off in October[2], and allows users with poor vision to more easily navigate and read Wikipedia.

This version also includes a major database upgrade, which should continue to improve the speed and stability of the Explore feed, Saved pages and user's local history.

Cheers,

Josh Minor

PM, Wikipedia for iOS 

[1] - https://itunes.apple.com/us/app/wikipedia/id324715238?mt=8

[2] - Described on list here: https://lists.wikimedia.org/pipermail/mobile-l/2016-October/010396.html