If we assume the extra spots will go to one of the top leagues, it means fifth place will enter the Champions League and it will have eight (rather than seven) places in Europe. Other European berths drop down a place.
Two extra places will go to the best performing leagues in Europe this season. Realistically, the additional places will go to two nations out of Germany, Italy, Spain and England. This means the team who finishes fifth in the Premier League this season could automatically qualify for the Champions League.