Per a listing for a Rogue One magazine spotted on Amazon, it seems that we could be seeing a March 28 release date for Rogue One on Blu-Ray.
This is about the same timeframe that as The Force Awakens‘ home release, so I don’t see any reason to be particularly doubtful. TFA also did a staggered release, with the digital copy coming a few days early.
The date also gives us a slight buffer before The Last Jedi promotion begins in earnest at Celebration in mid-April.