True Blood Season 6 Bonus scene (which you can view with other content through HBO Go--only in the U.S.).
HBO GO: True Blood Season 5 Finale Bonus Scene Interactive VIDEO SPOILERS:
This bonus scene picks up after the Authority HQ elevator with Jason, Tara, Pam, Nora and Jessica on it begins to ascend to the surface. They are to clear out the remaining Authority security vamps so they and hopefully Sookie and Eric and possibly Bill (probably not Bill, not now that he is 'Billith') can escape. (cont.)
On the way up Jason again hallucinates his parents, who earlier this season he discovered were both murdered by 'Warlow' a thus-far unknown vampire of at least several hundred years of age. Sookie and Jason discovered via her Bon Temps Fae kin that Sookie's distant relative 'promised her' to Warlow.
So far, Sookie has had just one spooky apparition-encounter with Warlow in her bathroom in which he declared that she was his.
The elevator ride banter included Tara hitting on Pam and Jason being goaded by his imaginary dad, who called him 'champ,' cheering Jason's 11 vampire kills, and encouraging Jason to kill Tara, Pam, Nora and Jessica as they were 'sitting ducks'. Before Jason could fully process his dead father's request, the elevator reached it's destination and all aboard went into kill mode. After Jason took out a random vamp, he uttered Warlow's name and Nora, looking extremely surprised, responded with "Warlow. What do you about Warlow?'
I'm just gonna toss out a guess that Nora is Warlow's maker because a. She's 600 years old and b. it would give her a reason to stick around in season 6 and would complicate all kinds of things between Eric and Sookie.