Recently, the PTS patch notes for updates 7.1.0 and 7.1.1 were posted, and it appears that there is still no mention of the Ancestral Imperial style, despite it having been datamined and having been applied to NPCs in Blackwood, and the new important NPC in the Waking Flame DLC (Lucilla Caprenia). Therefore, we can exclude the possibility that the Ancestral Imperial style is going to be released with Update 31/Q3/Waking Flame DLC.
If we consider that the Markarth update (Q4 for the Dark Heart of Skyrim) only came with one Ancestral style (Reach), then we can assume that, because the Q4 is speculated, almost confirmed to be set in the Deadlands, then the Q4 update of Gates of Oblivion will only come with one Ancestral style, the Daedric one, which is also confirmed to be a thing.
We can only hope that Zenimax makes an exception in Q4 and releases the Ancestral Imperial style alongside the Daedric one, because it would be really disheartening otherwise, considering the Gates of Oblivion season is the perfect time to release it due to the strong focus on imperials. I wouldn't see another time they would release it if not during this year.
Unless the Update 31/Q3/Waking Flame DLC patch notes are incomplete and they're actually going to release this style in August, since the patch notes for 7.1.2 on PTS are not out yet, but I doubt. Please Zenimax, do release this style this year, it's so good to pass on.
What do you guys think?