It's basically in all the "details" pages via the site menu > dedicated (and contrary to what I said, not limited to "enterprise"/ecc ram servers). See for example:
Ed: i think the implication is that you can just go ahead and use 300tb/month on a 1 gbps port if you can stand doing that... But that 3 000 TB/month on a 10gbps uplink is not included...
I did file a support ticket asking about this a month or so ago, they told me that there's really 1 Gbps guaranteed bandwidth and I could use 300 TB/mo. I didn't know about the update so I didn't ask, but I have just filed another issue asking about that.
I'll be honest, looking at those servers, I kind of want one of my projects to succeed (i.e. make more than $50/mo) so I can rent one of them.
https://www.hetzner.com/dedicated-rootserver/ex42-nvme
Ed: i think the implication is that you can just go ahead and use 300tb/month on a 1 gbps port if you can stand doing that... But that 3 000 TB/month on a 10gbps uplink is not included...