Yesterday we flew RNO-DEN and DEN-BOS. On both flights, there were multiple announcements that there were "weight restrictions" which would prevent more bags from being put in the hold, so if the overheads were full and pax had bags they would need to be offloaded "which would delay your flight". This was accompanied by repeated exhortations to put anything small under the seat in front of you.

Was this just coincidence, I wonder, or is it part of a new campaign to get on time departures by not needed to check bags carried on? It was not unusually hot at either airport, for the seasons, and winds did not appear to be an issue given our in air flight times.