Mario Kart 8 Deluxe Wave 5 DLC release date confirmed for next week - VideoGamer

The Mario Kart 8 Deluxe Wave 5 DLC release date has now been announced by Nintendo through their June Nintendo Direct.
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Mario Kart 8 Deluxe Wave 5 DLC Release Date Announced

Mario Kart 8 Deluxe's Final Booster Course Pass Wave Includes New Tracks, Racers, Music Player, And More - Game Informer

Mario Kart 8 Deluxe Wave 4 DLC adds new Yoshi's Island Track

The final wave of content is racing to Mario Kart 8 Deluxe - Booster Course Pass DLC next week - Gaming Age

Mario Kart 8 Deluxe - Booster Course Pass Wave 6 - Course Overview Trailer

Mario Kart 8 Deluxe Booster Course Pass:' DLC, Pricing, Availability

Since Nintendo confirmed Wave 3 coming this Holiday. I think I know what day will it be release. Because I notice a pattern between the release of the DLC Waves and the

OUT NOW* Mario Kart 8 Deluxe Wave 3 DLC release TIME for UK, US and how to download - VideoGamer