Timing is going to be big as usual with this type of setup. The past few days, most models were delaying the onset of precipitation till during the day Friday, and into Saturday.
Just noting the early 12z data today, has shifted back to an earlier onset, Thursday evening, leading to a colder/drier airmass, and allowing for a slightly better signal for some icy concerns by Friday morning.
Also, the GFS seems to become quite amped up with an inland tracking surface low up closer to the Apps, while the other guidance is indicating a low tracking further east along the coast.
In the end, this may not matter much as the high slides out during the day, Friday leading to a narrow window of opportunity.
Just a few thoughts to monitor in the future trends.