I can't really comment on this it would be up to Rick.
@Xaby
There are three options for buying AppGameKit Studio.
1) Buy now using the TGC Download option, this will grant you a download version of AppGameKit Studio from TGC website upon release. You also get access to the alpha version that you can download now from TGC website.
2) Buy now using the Steam Key option, this will grant you a Steam key of AppGameKit Studio upon release. You also get access to the alpha version that you can download now from TGC website, you lose the TGC download version upon release.
3) Or don't buy now miss the discounts and buy direct from Steam upon launch where you only get the Steam Key.
You only ever get one or the other never both a Steam Key and Download.
The TGC download version requires manual patching from TGC website, the Steam version auto patches as you know.
There are no plans to release on Humble Bundle or other sites at this stage, that will be much later.
Windows 10, Intel i7 4.2 GHz, 16GB DDR4, NVIDIA RTX 2060