To keep it simple, a magazine earlier in the week reported about a scandal involving Toru Furuya, who is the Japanese voice actor for Freyr (among other characters from other franchises), and Furuya released a statement about it a little over an hour ago from my writing of this post.
The scandal, which will be spoiler-tagged for its content, revolves around Furuya partaking in an affair with a fan, getting her pregnant, forcing her to get an abortion, and abusing her throughout the relationship . The magazine reported this first, and then Furuya's statement confirmed that it was all true.
Needless to say, Freyr may not receive anything in FEH for a while, unless he's recast, since a scandal like this will most likely get him blacklisted from all work for the rest of his life. I know that a lot of competitive players were hoping for a blessable Freyr sometime soon to counteract the recent blessable Embla, so I thought it prudent to share.
Similar situations revolving Tatsuhisa Suzuki (Alfonse, Berkut, Bramimond (as Alfonse), Ranulf, Tibarn) and Takahiro Sakurai (Eliwood, Bramimond (as Eliwood), Julis, Lukas) also resulted in these characters getting no alts/voiced content (mostly relevant for Alfonse story cutscenes) after their situations came to light - for all of the above characters,
only Young Eliwood was released, with him being voiced by a new actress, Asami Yaguchi.
Statement (in Japanese) from Furuya can be found
here
https://www.reddit.com/r/FireEmblemHeroes/comments/1cxrxfi