It may be a relic or it may not the 6.0.1 added in on the wowdb link
http://beta.wowdb.com/spells/104314-demonic-fury says its also triggered by soul fire and shadow bolt with there own generation values of course that fits, not to mention that in the WoD talent calculator you can select glyph of demon hunting with a level requirement of lvl 1 sort of makes Me question the accuracy of wowdb/wowhead or if they are correct the stance blizzard has publicly stated.
My list of reasons for believing its still on the table are as follows
Adjusted threat value of DA
The change to the tooltip and effect of provocation
The rolling in of the DA mastery into demonic fury
Fury ward, still being called in DA, potentially causing multiple game crashes because calling on something that doesn't exist
Demonic fury gen from meta melee
Defensive glyphs/talent choices
Meta melee being effected by gosac
Readiness effecting twilight ward
The drain life perk, cause reading it it sounds like clipping it will generate ridiculous self heals seeing as there isn't a stack limit
The change from vengeance to resolve
Gear/item changes stats being on gear but only being effective in a given spec
Lack of statement saying its off the table entirely
With all of those changes, most of the things Celesalon stated are no longer an issue, the 3 things that are well balance in never perfect, crit immunity is a melee thing and everything about locks is ranged, and player awareness/training is a time thing
Now there is a chance its all just bad Data mining, but there is also a chance its a case of people like myself seeing what we want to and there is also the chance that it is something that they don't want to release details on because they are in fact working on making it. But really it is just speculation and unless someone wants to spring for a server side copy of wod,assuming blizz would even sell it pre release, allot of the background workings will remain a mystery
I do however find it unlikely that 2 mobs do the same bad datamining, and blizzard does have a habit of stealth adding/changing and removing things, and they also seem to like experimenting