f(x) is gearing up with their comeback preparations.According to the officials from SM Entertainment on September 1st, f(x) is currently preparing for their comeback. They are said to enter the new music video filming next week on September 11th.Victoria, who's busy with her overseas schedules, will return to Korea this week to focus on the preparations for the group upcoming comeback.This comeback is sure attracting more and more attention since this will be the first time they will be promoting with 4 members, following the departure of Sulli last month.Are you excited for f(x)'s comeback?