Let me preface by saying I'd taken about 2 months away from the game due to life issues, so if this is just a new system I missed in old patch notes, I apologize.
I created a couple Arcanists to try the class out, and at level 10, went to Cyrodiil (Icereach) to do my "basic training", as usual. Instead of being rewarded with ~3k AP, I was instead given about 6,600 AP, per step in training (talking to Bugbesh, repairing the siege, talking to the two Warlords), leaving me with almost 20k AP. I also received 4 rewards for the worthy, rather than two.
Wondering if this was an Arcanist only glitch, I created a Sorc, power leveled to 10, and tried again. Same result: ~20k AP and four rewards for the worthy.
Now, I'm fully aware during Whitestrake/Midyear AP is doubled, but I missed that event, and it ended on the 11th of this month.
I didn't test this further to see if AP is doubled across the board, or just during training.
Also, DC had no scrolls, fact of business EP dominated the map and had emp. So, no bonuses to speak of.
Again, sorry if this is just a new system and I'm, once again, a day late and a dollar short, or if this is an unintended bug.