A notice posted on their Facebook page yesterday by Britains

These great new sets have arrived in the U.S. and are on their way to Detroit, then on to us here in Holland, Ohio. They should be in our warehouse no later than the third week of February unless the weather takes another weird twist!
A second shipment with another eight new sets and the restock of George Washington are scheduled to arrive early in March. The painting on these new sets are exceptional...Miss Dayfield and the two chickens are one of my favorites.

The sets would appear to be
31280 Mrs Dayfield
36174 Brunswick Sapper
Federal Iron Bde Friring 2
10060 Alexander Hamilton
10061 Thomas Jefferson
10062 Marquis Lafyette
23115 Gas Alarm
23116 Gas, Gas Lads