Selfhosted

All are that the first year. I had someone in person tell me how they were put on a severely increased price despite being on a domain that should be very cheap. Sadly I don't recall who it was, so I can't ask them for the details.
The jist iirc was their domain got popular (due to their website), so xyz decided it belonged to a higher price category.
This was definitely not 1.111b specifically, but with a short search there I found reports that xyz has apparently decreased the scope of the 1.111b category before, making the minimum length 6 instead of 3, and then refused renewals for people that had 3-digit domains under the old price.

So I would expect arbitrary price increases on 1.111b too, it's not something I'd rely on. xyz always has the right to charge whatever they want, so you are one policy decision away from switching everything with no notice or shelling out whatever they think they can charge.

Compared to say .com, where there is a rigid contract of what verisign can charge, mandating a single price category, a set number of price increases with a set maximum increase, no difference between first year and renewal, ...
Or .eu which is free and only has registrar fees, so you could just migrate to a different registrar.

Edit: 1.111 not 1.1111