I'm sure we'll see the usual ad in an upcoming BERSERK episode. Young Animal always hypes up the newest manga for weeks beforehand and months after-the-fact. Normally, we don't see the ads because most of us only want to see the important sections in Young Animal, like Berserk.
But don't take my word for it, go to the Young Animal website (www.younganimal.com) under "new lineup" and see the first line. If you are able to recognize any japanese characters, you'll see that the "27" pertains to Berserk. Or you can visit this link.
(But I don't know a lot of japanese...so they may just mean a tentative date? Well I guess I can be sure that that's a tentative date at least).