Wikipedia released an update in the Store today with the following Change Log:

Release notes
Release 4:
* Added privacy policy link under settings/about
* Dropped currently unused location permission
* Fix for crashing bug on launch
Release 3:
* Fix for cut-off text in articles
* Can switch language on hub
* List recently changes articles on hub
* History popup list
* Initial localization support
* Added GPL license info
* Fixes for snapped view
* Network connection errors detected
* Pinning disabled on hub (used to crash)

Get it in the Store via the following Source

Source: Windows Store