I haven't noticed any change at FB. My ads are getting disapproved at a rate of about 50-1 like they always have. No wait, there have been a couple of changes: 1) ads take longer to get disapproved now. 2) rates have gone up a lot. Forget about anything in the US.
So all these "improvements" at FB have made really ended up making everything worse for advertisers. But thanks guys for the email allowing everyone to get excited for a few days. But as always, it comes down to the same thing: They're totally full of shit at FB.
Every single one of my ads has been approved. Maybe you just got a shitty rep.
Rates are only up because so many people jumped in and started running the same stuff. After a week or so they'll realize getting ads approved isn't the hard part and they aren't making any money, they'll stop, and rates will go back down.