Blizzard have now made the final update before Battle.net users can play the expansion and Season 6 available.
As announced earlier today, Battle.bet players will have to download a separate patch to be able to play today’s launch content. The update is 37.64 Gigabytes large and is available for download now. You may need to restart Battle.net to get the update to show up (it started automatically for us).
Other platforms will not require an additional update before launch.
In case you were wondering why only Battle.net players need to download this separate update, it’s probably related to them being able to download the updates early, when they didn’t yet have whatever components fixed the issues Blizzard needed to fix.