It's not yet clear whether the famous sportswear designer will use these designs, similar ones or completely different designs. There is still a while to go until the tournament kicks off, and until the countries officially present the final kits, it's all just speculation.
However, there are several things which seem to be for certain. For starters, Adidas will be opting for a retro feel with their kits. The majority of the leaked designs are inspired by shirts from the 1990's, either from Italia '90 or USA '94 World Cups.
The details (collars, sleeves) might vary, but the numbers and the font used in these designs, seems like it will be the same.
Without further ado, here are the possible Adidas kits for some of the teams playing at the World Cup in June and July.
Mexico - Home
Mexico - Away
Argentina - Home
Argentina - Away
Colombia - Home
Colombia - Away
Germany - Home
Germany - Away
Belgium - Home
Belgium - Away
Spain - Home
Spain - Away
Japan - Home
Japan - Away
Russia - Home
Russia - Away
Sweden - Home (not yet qualified)
Sweden - Away