Some Reddit users have supposedly discovered possible retailer leaks, with Switch, PlayStation, and Xbox listings surfacing on three European websites (owned by the same company) for a remastered version of Xillia. It seems these product listings are also registered to Bandai Namco and there's some art work included.
An online listing for Tales of Xillia 2 popped up in 2018 for the PlayStation 4, but to this day the sequel remains exclusive to PlayStation 3. Bandai Namco also mentioned last year how it was open to more Tales remasters, and was awaiting fan "suggestions and requests in the future".