There were many High paying keywords before this update,but Google has changed everything after this update. I don't  know what's wrong with Google but in real it has also ruin his own business.
Many keywords which were best before are not now, like before update, insurance ads paid mote than 10 dollars and now same ads don't play more than 1 dollar.

but I AM HOPEFUL THERE ARE STILL SOME ADS WHICH ARE HIGH PAYING BECAUSE THERE IS NO REPORT ABOUT THESE KEYWORDS AFTER THIS UPDATE, so ACCORDING TO ME SOME OF WILL STILL HIGH PAYING :

Attorneys
Lawyer Attorneys,Divorce Attorneys,Criminal Attorneys and Defence Attorneys.
Drug Rehab.
Insurance (Geico,All State,Elephant,Progressive and Mutual Funds)
Auto Insurance,Car Insurance,animal Insurance,life Insurance,marriage Insurance
Treatment 
Hosting/Domain/Yahoo Domain
Loans
Mortrages
Structured Settlement