So, do we have to have completed the Tokyo story line to move on to the new stuff or do we just have to be level 50?
Since it’s a story continuation, it’s a pretty safe bet that you need to have completed the story missions before it.
As P-Girl said, you would probably need to be on “Laying Low in the Limelight (last Tokyo Story Mission)” story mission to continue.
Like, I wouldn’t be surprised if they also pushed some bug fixes and small Quality of Life improvements out the door that help players earlier on, but that’s not the main focus.
Edit: I also think it’s fair to assume that the Cache will be dropping Secret World Wide.
Yes, you are correct. The new cache will be in tomorrow along with the patch.