As everyone knows, IU does rush in a strange way in more than one aspect. One of the aspects, other than bed rush is that we do 21 party the weekend before finals and then conduct the rest of recruitment after winter break ends. This year, IU will push all of recruitment to after winter break.
There's an article in the IDS that talks more in detail about it.
https://www.idsnews.com/news/mobile/story.aspx?id=91714
Personally I'm really excited about this change!