I have some big issues with this version. I recommend not to upgrade yet if you haven't done upgraded it.
The function to add all variations for a variable product is broken. You can fix it by setting the sort mode to name for attributes (in your attributes that you set in woocommerce > attributes).
Can't bulk edit sales prices on product page (no changes made) or bulk edit the sales prices in the settings of a variable product (can't save the product after bulk edit sales prices by some percentage).