The notice only made him push up this change to an earlier date. The source code was made available via GitHub under GPL 2.0 or later and the game's assets under the CC BY-SA 4.0 license.
The announcement prompted him to advance this modification to an earlier time. The source code was made accessible through GitHub under GPL 2.0 or later, and the game's assets were released under the CC BY-SA 4.0 license.