Originally Posted by
WineCountryUA
It seems to happen 60-48 hours beoredeparture, around midnight Chicago time -- but it can always change until you depart.
Spot on. Looked shortly after 10pm PST, and it had updated. My 6K turned into 15L - really wish we could see the mappings. My return flight at the end of the week has me in 1A in the old F right now, but looks like that one change as well. How sad!