As of my last knowledge update in September 2021, there were no widespread plans or indications of making it compulsory for men to wear skirts, dresses, or heels. Societal norms and fashion trends can change over time, but predicting specific changes is challenging. It’s important to note that clothing choices and fashion preferences vary across cultures and individuals, and there is a growing movement towards gender-neutral fashion and breaking traditional gender stereotypes. Any significant changes in dress codes would depend on various social, cultural, and legal factors, which can differ from one country or region to another.