Simple answer is: yes. I believe the only 'signficant' update that may happen between now and September 6th is Add-ons Manager. For the Preservation Crew content in general, we're committed to bringing them to both games, and the majority of it is in testing, but it's likely to come to TSW3 before TSW2. More on this in the Roadmap tomorrow though.
Especially taken into account TSW3 is 4ish weeks away, it’s quite expected preservation crew work and Bakerloo will follow after not rush in before