4k Digital Intermediates

I'm an avid follower on any information about movies with 4k DIs so as to make educated purchases for 4k Blu-ray movies. Most sources take point from the IMDb. I've compared info I've found on the web about new 4k DIs taken from the original source. However, IMDb still lists said movies as having a 2k DI. Is the info on the technical page for any said movie intended to be the info about the movie for when it was first released? Can that info be updated to include new 4k DIs made specifically for the 4k Blu-ray release?