Month 12 and quarter 4 RTI penalties to be issued soon?

In the flurry of activity after the 17th February announcement on the introduction of the 3-day tolerance for RTI ‘on or before’ reporting HMRC confirmed to me that penalties for month 12/January-March tax quarter would be issued from 22nd May. We have no idea how many there will be now that the 3-day tolerance has cut the numbers down but if you’re a payroll agent you might want to brace yourself for a bank holiday treat!