Yocto Project maintains an area for nightly builds that contains tarball releases at https://autobuilder.yocto.io//pub/nightly/. These builds include Yocto Project releases ("poky"), toolchains, Yocto Project plugins for Eclipse, and builds for supported machines.
Should you ever want to access a nightly build of a particular Yocto Project component, use the following procedure:
Locate the Index of Nightly Builds: Open a browser and go to https://autobuilder.yocto.io//pub/nightly/ to access the Nightly Builds.
Select a Date: Click on the date in which you are interested. If you want the latest builds, use "CURRENT".
Select a Build: Choose the area in which you are interested. For example, if you are looking for the most recent toolchains, select the "toolchain" link.
Find the Tarball: Drill down to find the associated tarball.
Download the Tarball: Click the tarball to download and save a snapshot of the given component.