Crunchyroll has been released in North America for the Wii U, with worldwide release occurring in 2015, here is a quote from the source:
Hey everyone! It’s been crazy year here at Crunchyroll, but we’re not quite done yet!
We know that a lot of people have been asking, and just in time for the holidays, we present the Crunchyroll app for WiiU! (How many of you guys noticed the updated image on the devices page? )
The app can now be downloaded in the Americas, with worldwide availability, as supported by the Nintendo eShop, coming early 2015. The app will be localized in all of the languages that Crunchyroll currently supports! (If you don’t see the app in your eShop, it may not be available in your area yet, but please let us know.) Premium users can access the app right away! If you aren’t a Premium Member yet, there are sample clips available for you to enjoy, or you can sign up for a free trial and experience all the Crunchyroll app on WiiU has to offer!
And a video from Nintendo:
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