New 40K

Games Workshop just announced that there will soon be a new edition of Warhammer 40,000 released and that it will be incompatible with the current codices.
I only need three current codices – Imperial Agents, Dark Angels, and Tau. I am missing several of the supplements though. I am currently reading through the old codices – having just finished Dark Angles, and Tau from the sixth edition.

It sounds very similar to what they did with the Warhammer game, where they had a big ‘end of days’ event spread across a few books, coinciding with large figure releases, and then wiped out the old ruleset and army books and started fresh with Age of Sigmar.
I wasn’t active in Warhammer at the time, so I didn’t get the end times books or models, and didn’t make the jump to the new system. I would have to chase down the end times books and a lot of the army lists from the last few editions to complete the sets.
I had liked the narrative that had been building in the old Warhammer world and don’t really have any ties to the new one. For me, it was a very good point to make a clean break.

I am closely tied to the Warhammer 40,000 narrative, from the early days of Rouge Trader, all the way through the grim dark present future, with the additions of the Tyranids, Dark Eldar, Tau, and Necrons, as well as the loss of the Dwarves along the way. A lot of fine details have modified along the way, examples being the Genestealers/Tyranids, the Space Wolves/Dark Angels history, the Chaos gods. A lot of the big picture has stayed the same.
Depending on how much it changes, this could be the last of my placeholder sets. It remains seen to see if that is because we part ways or if the new set will be a clean start.
The nice thing about having all the sets along way is that I can always go back and play with the rules from my favorite edition.