Build stable release with latest packages included?

For Developers
3

You did not mention specific versions. I will assume:

  • stable release = v18.06.4
  • latest packages = updates on the openwrt-18.06 release branch beyond v18.06.4

Look for the image builder for your device starting here and its wiki documentation. This solution is easy and fast because it relies on pre-built binary packages.
If you want to change compile-time options, you have to build from source instead.

Also note the progress towards the 19.07 release; the first release candidate has been published 2 days ago.