Ripper Street: When will series 4 be available to watch in the U.S.?

I see from Googling that folks in the U.K. can watch the latest series starting in mid-January, 2016, but I can’t find out when it will start showing in the U.S.

Can someone with better Google-fu than me pin this down?

Giving this one bump before I give up.

Commenters on the Ripper Street FB page is speculating April on BBC America. I don’t understand why networks are so coy about revealing air dates. Feels petty. Anyway it’s worth the wait…the first 3 episodes have been great.

Yay! Thank you.