The 1.10 patch for Witcher 3 is right around the corner says Marcin Momot on CD Projekt Red's forums. And it seems to be a massive one. There are around 600 changes, including 150 stability improvements, optimisations, additional converations and a much requested new way to order and sort your items.
You can go and read the full list of changes here. It's a 13 pages long pdf document of bullet points, so prepare yourself for quite a read.