No there will be no GPL of this card. Its open source but its not free to modify and distribute.
Its modification for personal use only. Commercial sales are fine. Copyright must be maintained.
The license is Creative Commons Attribution-NoDerivatives 4.0
https://creativecommons.org/licenses/by-nd/4.0/
This is the license i want to use going forward.
However if someone does make a modification for their own use and demonstrates to me with evidence that their version is better I will update, integrate and give credit. I just do not want proliferation of multiple crappy versions of the same card that people expect support with. I'm one guy with 4 unreleased card so i need to reduce my workload not increase it.
I also think that going to bigger pads is a step backwards. JLCPCB will assemble the caps on that board for >$5 including parts.... so why mess about with a different version and hand soldering. JLC can also do 4-4-4 DRC.... TF1230 is 6-7-6... Its 4 layer so signal purity is fine... its also a proven DRC with the TF1260, TF330, TF536 etc... all of them are the same.
Also, as someone who has etched a lot of pcbs in the past... the trickiest bit is when you have thin traces with big gaps. not dense traces with small gaps. So making it a 9.5 track separation doesnt necessarily help. You get undercut.