As noted, WWE has confirmed that Wrestlemania 34 would take place in New Orleans at the Mercedes-Benz Superdome on April 8, 2018.
WWE sent out a promo on Monday’s RAW to hype the event, and in the video, which you can see below, the logo for the event has been revealed. The logo is purple, green and gold (New Orleans / Mardi Gras colors) and somewhat similar to the Wrestlemania 30 logo, which took place in 2014.
It was so big three years ago, we're going back! @WrestleMania returns to New Orleans' @MBSuperdome in 2018! #WrestleMania pic.twitter.com/cFNbysQjGD
— WWE WrestleMania (@WrestleMania) January 10, 2017