(Breaking): default web server port changed from 8765 to 6128 (much easier to remember). --web-port remains available to specify any port explicitly.
Memory address notation in the debugger: bank prefix changed from Cxx: to Bxx: (e.g. B04:0200) to avoid confusion with Gate Array C0-C7 RAM configurations.
Flatpak package for the Qt frontend.
Qt: binary export now uses the @ convention during export, allowing the entry point to be specified at export time, not only when running under AMSDOS.
I asked your questions to DManu78 and Siko, who are the main authors of these two versions.
In the links I posted earlier, there’s a blog post that explains precisely what distinguishes Amspirit from Amspirit Lite, and it outlines the API tools that have been available to users for several months.
As for integrating specific ROMs into Amspirit Lite, this will soon be possible through the adoption of the CRO format, which I mentioned in a post on the old forum, to directly populate ROMs.
Regarding the source code, they are currently unwilling to share it.