Where are the language files

I asked a very similar question early in the morning in the Woo blog page, and figured it out myself:
With the new version, they changed the folder of the language files, the localization is maintained differently.

New location of the folder is the same for the WordPress:
your-site-com/wp-content/languages/plugins/(woocommerce-xx_XX.po)

But, more importantly, the languages files are downloaded and activated within the admin panel after the update.

In one of the replies, the translation project is linked as:
https://www.transifex.com/projects/p/woocommerce/