The long promised IPv6 rollout on Hyperoptic has now started. I have it and it's working fine. The good news is that Hyperoptic seem to have done a decent job of it.
If you are using the HO provided router you don't have to do anything, it will just work. You may well have it already without even realising...
If, like me, you do not use the HO router, things are still just as good. HO have gone with a very standard (typical) method to provision IPv6 and there is nothing odd or unexpected to deal with. The initial Link Local config is done with SLAAC and your Prefix Delegation can be obtained via DHCPv6. I'm getting a /56 PD, so I assume that everyone else will too.
There is currently no information anywhere that I can find from HO regarding IPv6 setup for those using their own router, so if this is you then all you really need to know is that you can use SLAAC & DHCPv6 PD. A careful search on Google should get you the info you need for your particular router.
Good to see HO get this right, well done HO!