The newest update to Prime will be rolling out next week, with new tracks for both the global and Japanese versions.
For Japan, on August 28th:
- 空の調べ (Sora no shirabe)
- Annihilator Method
- Milky Way Galaxy
The global update just includes Silhouette Effect and Annihilator Method. No Tatsh yet, sadly.
Both updates should automatically take effect if your Prime is online, otherwise Andamiro will likely offer it for download on their website.