you say in the devlog that this has been added but i still an use the Boats or do i need to wait for a update or do i have to download it some where

Previews are basically just Shawn showing us what the new update will be like. The actual update hasn't been released yet, and even when it does, it will be buggy for the first day or two while various bug fixes come out.

oke that no brop its normal to be buggy in the firts week or 2  i wil notice when it has updated