The patch will also contain a new type of dungeon that can be randomly found from treasure maps, a new map for Frontlines, and the previously announced Palace of the Dead content. Many more housing plots are also promised for release in 3.3, with prices to be released, suggesting that it won’t be the same prices as current housing. Players can also look forward to crossover weapons and minions from Yo-Kai Watch this summer, although the exact timing has yet to be announced. As the opening said, even by FFXIV patch sizes, this one looks big.
Source: Official Site