Jordan Petridis has announced the availability of the first alpha version of GNOME 45. 

GNOME 45 Alpha Released

Hello,

GNOME 45.alpha is now available. This is the first unstable release leading to the 45 series.

Download the GNOME 45.alpha sources.Review the list of  updated modules and changes. 
Use the official BuildStream  project snapshot to compile GNOME 45.alpha.

A GNOME OS install image is not available for this release due but you can get a Nightly image from  os.gnome.org  which is a close approximation of the alpha release.

WARNING!

This release is a snapshot of development code. Although it is buildable and usable, it is primarily intended for testing and hacking purposes.

For more information about the 45 release, the full schedule, the official module lists and the proposed module lists, please see our  wiki page:

Cheers,
Jordan Petridis
GNOME Release Team

GNOME 45 Alpha Released