Static Fire test has been repeatedly pushed back due to challenges with this first use of the deep cryo liquid oxygen system. Current launch window is Dec 20 20:02-23:02. Of course that will only happen if the static fire is successful today.
SpaceX continues to attempt Falcon 9 Static Fire ahead of OG2 RTF mission | NASASpaceFlight.com
The article mentions a Twitter dig by ULA VP Sowers. "That’s why we (ULA) don’t bother. Lots of complexity for little gain. Tough to know the conditions of LOX at liftoff."
Yeah, currently going through a couple holds on the static launch sorting through some stuff. Tuesday as a backup to Sunday.