Will the Character Slot Cap increase with the new classes?

Not sure if this is the right place to ask this but with the new classes coming in April and May I was wondering if the character limit per server will be extended to include more than 12 characters? I have been enjoying playing my alts and had been saving a character slot for 1 of the new classes, problem is there are too many cool ones to choose from! If the character limit isn’t increased in the upcoming patches would it be possible to give us a heads up when the character limit is increased since I am sure I am not the only one eager to play more classes but constrained by a character limit.