Flight Sim Labs have released a new product update for the A319-X, A320-X, and A321-X – 64bit. Per the announcement, the update brings each aircraft up to V2.0.2.440. Notably, the update features “a fix for the STD ATSU leap year issue, as well as fixes in friction logic that caused high brake temperatures in ‘hard winter’ scenarios.”
Note, liveries will need to be updated due to changes in the aircraft model(s).

Image: Flight Sim Labs
Source: Flight Sim Labs forum