According to data-mined strings within Build 11779437, references to "H5 Series Shinkansen" and "Hakodate LIDAR data" suggest that JR East is preparing a Hokkaido Shinkansen expansion. However, the build number indicates this will be a free core update preceding a paid DLC.
Additionally, the build contains commented code regarding AMD FSR 3.0. Currently, the game only supports DLSS 2.0; Frame Generation is likely coming in Build 11800000.
JR EAST Train Simulator Build 11779437 is more than a patch; it is a statement of intent. By removing the "game-isms" (the brake blending stutters, the ATS grace periods, the input lag), JR East is signaling that they are doubling down on the professional training tool aspect.
This build likely lays the groundwork for the rumored "Shinkansen Extension DLC" expected in late 2026. The new DirectInput stack in 11779437 is necessary for the precise control required for 300km/h braking curves on the Tohoku Shinkansen. JR EAST Train Simulator Build 11779437
JR EAST Train Simulator would presumably focus on trains operated by East Japan Railway Company, one of the major railway companies in Japan. This could include a variety of trains, from local and rapid transit services to long-distance limited express trains. The simulator could potentially feature a wide range of JR EAST's rolling stock, such as the E231, E233, and E353 series, among others.
When you launch Build 11779437, the experience is deliberately anti-dramatic. There are no crashes, no passengers to manage, no points system. The "story" you create is one of perfect punctuality and precision:
The r/trainsim and Japanese rail simulation forums have responded positively to Build 11779437, albeit with some caveats. The Bad: Prior builds (Sub-11700000) suffered from blurry
The Good:
The Bad:
Prior builds (Sub-11700000) suffered from blurry 2D textures when upscaled to 1440p or 4K. Build 11779437 introduces native vector-based HUD elements. The speedometer, ATS/ATC indicators, and brake cylinder pressure gauges are now crisp even on 4K displays. the game only supports DLSS 2.0
| Feature | JR EAST (Build 11779437) | Train Sim World 4 | Densha de Go! | | :--- | :--- | :--- | :--- | | Physics Source | Real telemetry | Approximated | Arcade-style | | Input Lag | ~9ms | ~25ms | ~16ms | | Route Detail | Photogrammetry | Stylized 3D | Anime-style | | Train Variety | JR East only | Global | Japanese only |
For the purist, Build 11779437 offers the most authentic braking curve simulation on the market. You cannot "cheat" the deceleration; the train weight calculation is live and unforgiving.