TCM releases tomorrow

We already have Alien and the free trial a week later.

Give everyone a week to get TCM put of their system then come running back to DBD.

I honestly wouldn't be surprised if Alien was supposed to be the anniversary chapter, however when TCM was confirmed to come out in August they moved it back and replaced it with Singularity to make Alien coincide with the TCM launch and thoroughly nuke the TCM game launch.