https://www.gamespot.com/articles/call-of-duty-ww2-beta-is-now-playable-on-ps4xbox-o/1100-6453040/

Call of Duty: WWII's second beta weekend was scheduled to begin tomorrow, September 1, but it's gone live a day early. You can already jump in and check out the beta, which includes several additions from last weekend.

Players noticed earlier today that the beta had become accessible well before its planned September 1 start date; GameSpot has since confirmed that it's playable now. So, if you've pre-ordered the game on either PS4 or Xbox One and received a code for the beta, you can start playing as soon as it's downloaded. If you haven't received a code, you can check on its status here.