The adidas match ball features the UEFA Nations League name and a panelled design incorporating various colours that mimic the competition's logo.
Martin O'Neill's side have been placed in League B, the second tier of the competition, a group of 12 teams, those deemed the 13th to 24th strongest sides by UEFA.
Sky will be our hosts as Ryan Giggs' Wales get the home ball rolling by welcoming the Republic of Ireland to Cardiff [tonight, Main Event 7.45pm] or, if you prefer, Germany entertain World Cup winners France on Sky Football.
The top side in each group in Leagues B, C and D will be promoted, and the bottom side in Leagues A, B and C relegated.
The Concacaf Nations League is a new tournament for national teams based in North and Central America, and the Caribbean.
And on top of that, the winners of each league will qualify automatically for Euro 2020, meaning it's a back door into the finals should Northern Ireland mess up their qualifying campaign.More news: American Horror Story Season 8 Trailer
Gomez was one of the players who would have been part of the 23-man roster for the finals in Russian Federation.
By securing top spot in your mini-group, you automatically advance to a play-off series that is pencilled in for March 2020, where the last four places at the summer showpiece will be handed out.
Coach Loew made a decision to stay on and has pledged to successfully overhaul the team and turn it back onto the road to success, with the Nations League being their new start.
The winners of each group gain promotion up a level for the next edition of the Nations League, which begins in 2020 and has its final the following summer.
Maguire isn't the only one to be confused by the Uefa Nations League, as fans have taken to Twitter to vent their frustration and bemusement at the tournament's format. France could start potentially 10 of the 11 players who started against Croatia in the final.
Throwing four Euro 2020 places their way earned him their favour before scandal forced him out of the governing body. "From our training sessions, I feel like we are changing one or two things, and I hope that people see that tomorrow". Should any of the league winners have already qualified through qualifying, they are to be replaced in the playoffs by the next-best ranked team in their league.
Football's newest competition kicks off this week in Europe with few knowing all the details of a complex format.
Yes. The Euro 2020 qualification draw takes place in Dublin in December with all the matches due to be played between March and November 2019.