The bad news is that while the DVD will be a fairly standard bi-lingual release featuring both a new English dub and the original Japanese dialog with English subtitles, the Blu-ray will only feature the English dub. This is the same bullshit tactic that was used for Bandai Entertainment's release of Kurokami. Remember that show? No you don't! Nobody does, don't lie to me like that...
The reasoning behind this absurd release is obvious enough: The Japanese release, which retails for about $900, gets its last of 10 Blu-ray volumes on the 22nd of this month. Sentai's first volume containing half the entire series 4 weeks later. Sentai's original MSRP was $70, or less than 1/6th the cost of the Japanese release. Aniplex sees a bargain priced "Region A" import release as a threat to their insanely expensive local alternative, and likely offered Sentai Filmworks the following four choices, each increasingly shitty in its own unique and sad way:
Only release the show on DVD and waive Blu-ray rights completely.
Release the Blu-ray dub only for typical US pricing now.
Release the Blu-ray bilingual for typical JP pricing now.
Release the Blu-ray bilingual for typical US pricing AT LEAST a year later.
Never having delved into the Persona franchise proper*, I can't say this particular release upsets me as a fan... but it does worry me as a consumer. We've seen "forced" English subtitles on several releases, and while slightly annoying in the scheme of things, I don't really mind much. Dub-only, though? That's just brutal.
Like I've said, I was never going to be first in line to pick up PERSONA 4 anyway, so maybe my stance here is irrelevant. But you bet your ass I'll be the first to say that I'll not support an anime Blu-ray that's been stripped of its original language.
* I own the PSP remake of PERSONA 3, so I'm not totally disinterested. Just distracted by a hundred other things.