I'll have to retract my statement and say things should be ready for Sunday. I've worked hard, even skipped gym stayed inside all week, but it still took far longer than anticipated. Today, I've officially finished all the update's contents, I just need to test a few bits, write the walkthrough, add the scenes to the reminiscence room, add the saves, and finish the freeroams. Most stuff is pretty simple, it's just the freeroams which will most likely take me an entire day of work.
So, at the earliest, it will be out on Sunday. Most artists should be done by then, it's just one of them who's not 100% sure he'll be able to meet the deadline.