UPDATE: According to the Nintendo Direct Mini, EarthBound is coming to the Wii U eShop today.
http://www.nintendoworldreport.com/news/34940
EarthBound may be showing up on the Wii U eShop today, July 18.
The classic Super Nintendo RPG is currently listed on Nintendo of America’s website, as well as the European eShop with a release date of July 18. However, an official announcement has yet to be made.
These listing are, unfortunately, not completely reliable. For example, Dungeons & Dragons: Chronicles of Mystara was originally listed as a June 18 release, but its release is now TBA.
EarthBound has also received a new rating from the ESRB. When it was originally released in North America on the SNES, it was given a K-A (Kids to Adults) rating. The K-A rating was replaced with the E (Everyone) rating, but it has now received a T (Teen) rating.
UPDATE: Today's Nintendo Direct Mini has confirmed that EarthBound will indeed be available today, July 18, on the Wii U eShop for $9.99. Additionally, It was announced that the original player's guide will be available for viewing online, on the EarthBound website. The player's guide is also optimized for easy viewing on the Wii U GamePad.