I was experiencing some delays in getting a pack. Normal, it's the holidays. Vendor offered to send the tracking. The package showed up on MyUsps before the tracking number got sent to me. When it shows up on MyUsps there is no expected delivery date, and it has been "in transit to destination" for the last two days. Holidays cause delays and such, but does the lack of expected delivery date being given mean anything?
I wouldn't count on the USPS updates. Seen this happening quite a bit recently with them. Based on my experience with clearnet packages that is.