Yes, they are here boys!
The update was done within the hour it came out and we tested them out too. So far they seem really good against wood however they revived a quick nerf already due to being OP. So far it seems the cost of flame throwers is not front loaded. They are cheap to make, expensive to use. The low grade fuel they use runs out quickly and is not always easy to come by.
Hop on in and try finding BP for it!