On September 28, 2017 going to release the next KNACK game the Knack II in Japan on PlayStation 4. The price will be 4900 yen + tax (package and download version) and if you pre-order the package edition you will find a DL code inside the box.
Using this code you can download the mini-soundtrack album of the game until October 11, 2017. If you choose the download version, you will get the original PS4 theme if you buy it until October 11 just like the package edition.
Check out the E3 trailer above again and stay tuned for more information.