I honestly hope they didn’t simply push latest Gutenberg version. The main reason is: there are some markup changes.

TABLE used to be a simple table.wp-block-table. The latest version become figure.wp-block-table > table

I believe that will mess up everyone’s styling.

Not to mention that some blocks like GALLERY and GROUP now has Inner wrapper. If you apply display: flex to .wp-block-group. Then your layout will be messed up.