Treyarch have announced the ps4 beta will now be open to all. So you won’t need a code of you wish to play
They have increased the level cap of 40 .
Also the spectre specialist is now useable for everyone. The spectre has not been playable until now.
A new game mode has also been added called safeguard. To which you have to escort a non lethal robot across the map.
There has been no word on if the Xbox one beta will be open also. But I should imagine they will do the same,but they will not say yet as they will lose thousands of preorders.