Just that. I was planning to register some webhooks, and I checked to see if I could find an endpoint for it in V2 and could only find the one in V1. But this leads to resthooks.org which seems to be down (and I am not fully sure if it’s deprecated?).
We are moving to webhooks for v2, and are in the process of re-engineering our backend service to provide a more full-featured implementation. At this time I would implement v1 Resthooks as documented on our developer site, but you will want to abstract your code enough to plug in the new webhooks when they become available.