Eureka/Masters of Cinema released Floating Weeds on Region B Blu-ray back in mid-December. It was Ozu's big color breakthrough. He'd done color previously at this point, but this is where the shot composition really used it most effectively for the first time.
The disc is locked for UK-region Blu-ray players, but it's readily available on Amazon UK (13.99 GBP or ~$23 USD).
The transfer is absolutely gorgeous, and the essay in the booklet by Ignatiy Vishnevetsky is very well-researched and written. If Region-B locking doesn't cause you problems and you don't care about the lack of disc-based extras, it's well worth your money (as it has been mine).
The movie is a reworking and remake of A Story of Floating Weeds, one of his big hits back in the silent days. This was one of the very rare times he made a movie at a different studio than Shochiku, which served as his home base for most of his career.
I'll be covering the silent original soon in Discovering Ozu, and will then double back on it (as I will with all his self-remakes) when I make it up to the color classic.