EngineDriver version 2.27.121 has been released to production.
To update, generally all you need to do is to connect your device to a WiFi network with internet access.
If it does not automatically update, open the Play Store app, go to 'My apps and games' and click 'update all'
EngineDriver 2.26.115 has now been released to production. If you're set up for automatic updates, you should receive it within a couple of days.
A video of the sceniced part of the N Scale Upper Deck from the perspective of riding on the train.