You haven't heard the saddest part: starting from September 16th, all the NOs, GMs and Classic DLCs (plus Kumamoto Surprise and Guren no Yumiya) can't be downloaded anymore, while the licensed first-day DLC will still be available for free (but without Sanpo Ura). All the other songs will be priced 150 Yen each.
I'm taking the liberty of adding this bit into your post, aqua ^^"
I'm taking the liberty of adding this bit into your post, aqua ^^"