This was originally part of a larger article with a few updates and callbacks to earlier reviews, but when I actually wrote it all down it got a bit more extensive the other points. So rather than dominate that article I'm splitting it off here.
So, when I did the Kamigawa Trilogy Review Ethan Fleischer (who you all should be familiar with) commented that the upcoming War of the Spark art book might be relevant for the placement of those books. Well, by now that upcoming book has come up to my house, and while there isn't the clear "Tetsuo killed Bolas in [[year]]" date I was hoping for, there is certainly a bunch of stuff relevant to Kamigawa and the Legeds II trilogy to discuss here!
Oh, and just to be clear, I'm not going to go through the entire book, I've got Ravnica reviews to work on instead. For those interested in a review: just like all the other art books it is full of gorgeous art, and while it doesn't do the deep-dive into a specific world like the previous ones it does give an overview of just about every plane Bolas has even peripherally been involved in, all planeswalkers featured in War of the Spark, and even gives us some new facts, like finally explaining why Bolas wanted the Eldrazi freed (basically, he hoped their threat to the Multiverse would lure enough planeswalkers to Zendikar to use the Elder Spell there). All in all, another great book, heartily recommended!
Now, on to the timeline discussion!
