I'm guessing many peoples reaction to this news is 'shocking' with sarcasm, or 'who cares?' Still, I thought I'd get it out there if anyone does care. Three was my least favorite Assassin's Creed for a long time. It wasn't until I replayed about a month prior, leading up to AC: Origins where I found out that I actually really enjoyed the experience. Many, if not all the issues I had when I originally played it wasn't an issue anymore, be it the myriad of bugs, Connor as a character, the story, the lack of music during exploration (the soundtrack is phenomenal though), or just some frustrating moments.
All of those things I pretty much changed my view on. I recommend those that disliked it, perhaps check it out again at some point, if not the remaster, the version you've already played. Whenever you get an Assassin's Creed itch and there's no new one to play, that is, if an AC itch even happens. It also helped I think as I played it when my enthusiasm for Assassin's Creed wasn't as high as it once was and my expectations were in check, so I could look at AC3 as a good game it is rather than the game it wasn't. Anyways, you can buy the remaster separately once it comes out, but it's also coming included in the AC: Odyssey Season Pass.
As for my interest level in the remaster, it's not all too high considering I just played it last year again. For anyone more curious, here's the Google search for you to click on any link about it. In the Kotaku article, they mention that the game will supposedly have improved gameplay mechanics as well as ergonomics. It also uses a new engine, but considering we have no images of it, I don't really know what that means in terms of how much better it'll look. And I guess it'll arrive in March.