According to the BBC World News schedule, the branded bulletins such as Impact and GMT are replaced with BBC World News, which I suspect will continue to be a simulcast with the NC. However there are WBR and Sport Today bulletins throughout the day, the first at 0530 BST.
No AM Business Live bulletin, but the PM edition is on.
Going through my recording of WNT, Victoria Fritz presented the 1900 edition for the first time (with Ros in Brussels). I'd speculate she's going to be the new Alice Baxter with the marathon shifts on WN. She was on from 1000 BST with Biz updates.