The most recent updates at 
http://www.ghostbombers.com.updates.html/ are:
- a page on 10./ZG 1 including Werk Nummern and markings of two Fw 190s damaged in accidents (this is to complement the extensive piece on Bookie's Fw 190 Page (
http://fw190.hobbyvista.com/);
- a clearer account of I./JG 2's actions on 17 March 1944;
- more information on III./JG 53's operations on 17 March; and
- operations by I. and II./SG 4 on 18 March 1944.