The seasonal theme (i.e. clones and 4th Cube slot) won’t be available until the 8th of October. They made this very clear in the 2.6.9 PTR Announcement blog
This time around, testing will consist of two phases:
- Phase 1 - October 1: During this phase, we will be introducing Legendary and Set item changes
- Phase 2 – October 8: In this phase, we will be adding the Seasonal Theme content
NOTE: Phase 1 content will persist throughout the entirety of the PTR. Phase 2 content will be an addition to the existing content.
The PTR Bug Report sticky and the PTR Feedback sticky both say…
Please note PTR 2.6.10 is phasing in content over the next two weeks. The current focus is on Legendary and Set item changes . Seasonal Theme content will be added in phase 2 which is scheduled for an update on October 8.
Not sure how much clearer you want them to make it…