There are a few languages features I plan on having:
The freeShop interface language will follow the console's language setting. This already exists, but there are no translation files currently made. Those will only be made after the settings interface is [mostly] complete (because text could change and I don't want translations to keep getting outdated during development).
Also, I will be adding language options in game filter. Along with filtering region, you can filter by games that have a specific language support.
Additionally, I will be attempting to fetch game descriptions in the console's language. US and JP regions I believe will only have English/Japanese descriptions respectively, but EU regions usually support several different languages, but it currently just gets English.