Yes, I have. 

I opted in this morning. It seems like they’ve mostly made improvements to their Today page, but fundamentally nothing huge has changed. It’s also worth noting that their update doesn’t have any impact on how Hospitable is interacting with Airbnb.

I have. So far, I don't really see any downside of doing so. in fact, I think it's better to stay up with changes and embrace them - part of using their platform.