The new forecast (as of the last hour) looks a bit better for the Skagit, at least up river. Still forecast to beat the modern record by 2', but significantly better than the 5-6' over the previous record that was forecast earlier. Downstream near Mt. Vernon the news isn't as good because the forecast has been pretty consistent in the 4-5' over the previous record.
I'm still a bit skeptical this will actually verify, but I think it's more likely than the previous forecasts. If I had to guess, I'd predict that both stations will be close to, or a touch above their previous records, but not as much as currently forecast.