Xenoblade Chronicles Definitive Edition plans to offer a ton of updates / improvements over the original Wii version, as well as lip sync.
Rob from Nintendo House had a brief podcast chat with RogerBase while playing the game. In the video, Rob confirmed that the game had a lot of lip sync reworked in the new remake. Monster Games’ Xenoblade Chronicles Definitive Edition Features A Reworked Lip-Syncing, Says Rob From Nintendo Treehouse.
In addition, the sequences of the future connected epilogue presented a more advanced lip synchronization compared to the original game, as expected. Still, it’s a sure sign of progress knowing that the main game has received similar treatment.