International Battle Pass is known to feature an obscene amount of content. However, Battle Pass of this year is something you haven't seen before. Valve has done an amazing job to deliver even more content compared to previous years. It is hard to name the most exciting stuff since everything seems to be exciting. You have tons of progression rewards, cosmetics, effects, terrains, challenges, level ups, items, and so on. You name it! Just check it all here, at the official announcement page.