Will One UI 7.0 based on Android 15 be unveiled during the Samsung Developer Conference event on October 3rd, 2024?
We can keep on guessing. Anticipation is on top level 
Every new One UI gets announced during SDC, Sally Jeong will be speaking tomorrow.
“Direction of One UI powered by Galaxy AI”
Yes, I see her in the speakers list. Thats what has kept the hopes alive of the reveal of either beta or some reflection on whats coming in 7.0