Hi there, this is Greg, bringing you the latest changes in Rails!
This PR fixes an issue with changing date objects when the zone is set.
This PR fixes number_to_currency to avoid negative format when displaying zero. Before this change, number_to_currency(-0.00456789, precision: 2) _returned _$-0.00
From now on instance dependent associations are supporting preloading. To get more details about this change, read the PR descriptions, it explains it really well.