The launch campaign is in progress and on track for launching on the first day of the launch window on Wednesday, 5 February 2020, ~23:27h ET. This week, the rocket is being erected at the Vertical Integration Facility near the launch pad, the oxidant loading of the S/C has been completed, and the S/C fuelling is scheduled for today. A recent news story contains some further information and pictures:

Per current planning, the launch vehicle’s “wet dress rehearsal” will take place on 21 January, and the S/C will leave the Astrotech processing facility to be mounted on top of the rocket on 24 January.

Finally, a few links with pictures:
— The ULA Solar Orbiter Flickr Website (launch campaign photos):

— The NASA LSP Solar Orbiter Flickr Website (launch campaign photos):