At this time, the 1.39 Experimental Open Beta will only be available for Window users. Linux and Mac OS users will receive the option to opt-in to the beta at a later date.One of the first things you may notice when you launch American Truck Simulator with the 1.39 Experimental Open Beta is a redesign of the current launchpad. The main reason why we are introducing this change is to pave the way for future additions; which will introduce new features to our games, that will be accessed through the launchpad.new Lowboy Trailers will be arriving to American Truck Simulator. These trailers have been reworked from the ground up, offering drivers the option to purchase them and use them in an array of different jobs including Special Transport, Forest Machinery, and the Heavy Cargo DLC's.Owners of these trailers will benefit from a wide array of options to customize them in the upgrade shop, such as color, trailer accessories, beacons, chassis options, lengths, articulated axles, and more!The release of Idaho for American Truck Simulator saw the introduction of a brand new feature that has not been placed in any other previous map release. Viewpoints allow drivers to activate a special in-game "cutscene" with a short showcase of a near location or place of interest such as an industry. That viewpoints will be arriving in Washington and Utah. Each state will receive 10 new cut-scenes to discover, which can be found nearby famous landmarks, national parks, and industries. 1.39 also features various bug fixes, improvements, and an update to sounds. This includes, but is not limited to, improved interior cab sound mixing, Western Star 49X truck bug fixes, and improvements, and other changes in preparation for new and upcoming content.It's only an experimental open beta, not a stable public version - so you may encounter bugs, instability, kinks, or crashes.If you wish to participate in the open beta, you can find this version in the public_beta branch on Steam. The way to access it is as follows: Steam client → LIBRARY → right-click on American Truck Simulator → Properties → Betas tab → experimental_public_beta → 1.39. No password required. 【Information from SCS News】