There are many new developers making games, utilities, new versions of languages, a GCC compiler patch to output 9900 code, a bunch of really cool modern hardware solutions including the TIPI that provides a modern hard disk and internet connectivity via a raspberry pi. and the F18A VDP replacement is on this and many other systems to get VGA out. more info: https://www.arcadeshopper.com/wp/ti-99-4a-faq/