how do I make the anvil?
and is the new update public, or for download only and not for the browser?
The new update is not out yet, so the current version does not contain those changes. You can download the latest dev build on my Discord
https://discord.gg/sJjsksEwDq however, you require the 'Dwarf' role, which you get after being a bit active on the server!
You can see the current progress of the first 0.1 update here
https://trello.com/c/mKn5wjsy/6-%F0%9F%8F%81-01-forging-update