Linky: https://forum-en.guildwars2.com/forum/game/wuv/WvW-and-the-Heart-of-Thorns-Release/first#post5609875
"Here’s what the Heart of Thorns release will look like for WvW:
- On the morning of Thursday, October 22nd, WvW will be terminating without completing or updating Glicko ratings as normal. This will be the end of the classic (“Alpine”) Borderlands maps for the foreseeable future.
- On entering the build with the new Heart of Thorns content, all of your spent WvW Ability points will be refunded. Recall these can be spent differently per character, and spending them on one character doesn’t spend them on any others.
- WvW’s reset time will be changed to be 24 hours later in NA and EU. It will now occur on Saturdays instead of Fridays.
- At the moment Heart of Thorns content becomes available, WvW will prepare its maps. Including the new Desert Borderlands map. There’s no guarantee the matchups from earlier in the week will be the same as the new ones (or that they’ll be different).
- The new round will run until the new reset times on Saturday, then end and update Glicko ratings. After it comes up again, WvW will be running as “normal” except for the changed reset times and the new Desert Borderlands."