Quoting: DrakkerA new release is usually slight tweaks to the package selection that's installed by default. They also update the Welcome app and other small things. But yeah, Endeavour is just a quick installer for Arch. In 5 minutes you have an up and running Arch system with a decent selection of pre-installed packages and a desktop manager of your choice from a short list they offer.

Huge Endeavour fan here. Every device in our household for every family member has it installed (minus one daughter's high school who, for her arts and design classes, mandates an Apple laptop... Grrrrr....).

For those thinking of using it, it's a bit more than just an installer. There are some ideological tweaks that make it into the install. For example, packages to allow the DE's to auto index files for search is off by default (in at least KDE and Gnome) and the same for linking the DE up to Google services should you want to do that (which my wife wanted in her case, which is how I found out some more packages were needed). Other distros have these on by default or installed at baseline. That's the biggest difference I've found.

Just a PSA.