The crossover comic between Power Rangers and Justice League was announced in October, and the first issue is set to release in January. The premiere issue will have a standard cover and six variants, each depicting a different combination of Ranger and Justice League member. DC released all six covers, and they will all be available for the first issue only. The remaining five will only have the standard covers.
It will be a six issue comic dealing with the Rangers trying to rescue Zack from the Justice League. The command center teleporters are damaged and Zack is thrown into another dimension where he's seen as an enemy by the Justice League. Of course, the Rangers need to find a way to rescue him. The first issue will release on January 11th, followed by one issue a month thereafter.
The crossover is a promotion for both upcoming films next year, and you can see all six covers below.