Check your inboxes!
If you haven’t signed up for the Bloodborne Alpha, you can do so by visiting the PSN Beta signup page. Please keep in mind that this Bloodborne Alpha program seems to only pertain to EU PSN users and we’re not sure when NA will get their turn. According to the sent emails, this Alpha test is a small-scale test likely to strain and monitor Bloodborne’s online experience.
This should be similar to what FromSoftware did with the Dark Souls 2 Network Test which turned out to be a success since Dark Souls 2 boasts the best online PVP out of the whole series. No official dates was given on when the Bloodborne Alpha goes live but keep an eye out for invitations as FromSoftware will probably be looking at your Dark Souls completion rates and trophies in order to pool the best players.
Bloodborne is slated for a February 5th 2015 release in Japan.