I was surprised when the Lite version of our newest game (Suppression) was approved on Sunday... looks like they're kicking it up a notch. They never used to work Sundays.
The last game I submitted (early Sept) was approved in 10 days... recently, an update was approved in 14 days. They're just playing catch-up.
I had 3 apps approved on Friday, 1 on Saturday, and 2 on Sunday!
Those first 3 had taken MONTHS but the other 3 only about a week!
And I've been able to talk to someone at Apple... They have been and continue working on weekends.
Gee, I hope the quality of their approval process wasn't compromised. 1400 in one day? How can you possibly thoroughly look at each app?
In my case, some apps had been rejected over keywords, so upon changing those, the obstacles were removed and 3 were approved quickly. So I can see how they might have batch approvals. It helps when they communicate better and tell us what they find objectionable.