I'm seeing that 'You are scheduled...' stuff in the payment history page for an awful long time, may be since 18th of this month and yet not PIP'd.
I thought last Friday would be the day but was not to be. And if friday wasn't the day, history tells that it'll be Tuesday, 25th May. Getting PIP on 25 is too late for where I stay, I generally see Payment issued (check) on 26th of 27th. This month it looks it will be over 27th at least by a couple of days.