I have monitored this thread since late Aug 23. I collected my new Ocean 29 Sep 23, so it must have a 03S bellows although there was not tag on the fly screen zip on delivery.
I have used the van several times overnight in dry conditions, but tested it in rainy conditions on the drive, in ever increasing duration and rain type. The latest test in mid-Jan was 6 hours in umbrella-grade rain with light to medium winds. No leaks or drips in any of my tests. (Cue "you are burying your head in the sand").
I watch the experiences here. 04S bellows promised but 03S fitted, even now in Feb 24; rumours of an 05S bellows; people having multiple bellows fitted, one after the other; dealers not believing owners, despite video evidence; Californias in the dealer for days at a time awaiting their test; and sadly, some reporting scratches and damage on return of the vehicle.
I really do wonder if I want to go through the hassle of the warranty route if my bellows does actually leak. Instead, I'm on the cusp of applying Fabsil and seam sealer to do what I can to make my bellows fully leak proof - £36 and 4-5 hours application and drying time, all under MY quality control. Yes, it will almost certainly negate the warranty. But if it does leak after treatment, it looks to be about £1500 to fit a new, updated 04S / 05S bellows. But because I would be paying, I can absolutely make sure it's the latest bellows.
Decision soon.