The info for Easter service levels has been up for a few weeks on the NX website:
http://nxbus.co.uk/west-midlands/information/service-changes/easter-and-may-bank-holiday-services-?utm_source=homebanner&utm_campaign=easter-and-may-bank-holiday-services-&utm_medium=image
It appears 'revised timetables' will be in operation on some routes. I presume this means reduced PVR's on these services? That's the case for WN services listed anyway
"Holiday timetables" - I wish they'd do the same for the 37 service, running time stays the same but due to the reduced traffic levels, it runs at a crawl or waits for several minutes at each timing point to stay on time. Cue the frustrating repeated stop-bell pushing from some impatient passengers to get the bus to move! ::)