The latest update (v.2.1.1) for Shisensho Solitaire enables users to create a custom language file. I'm hoping that over time, players will voluntarily translate the game into their native languages, and share them with me so I can make them official. Credit will be given, of course!
Guide: How to Make a Custom Language File
Also, the game now automatically creates a local backup save file every time you play (up to 20). While I've not had any reports of players losing their progress, it's always a good idea to keep backups. For an explanation of how saving, backups and Steam Cloud work in Shisensho Solitaire, see this guide:
Guide: How to Restore Progress from Backup
Finally, if you missed the forum post, the previous update (v.2.1.0) added a way to cycle through all the moves available on the board when using the Hint button. Prior to that update only one move was highlighted. In addition, I added a music track selector to the in-game Settings menu (cog icon) so you can switch between songs while playing.
Thanks for playing!
Nick