If you are interested in building applications for GNOME 3.28, you can
use the GNOME 3.28 Flatpak SDK, which is available in the
sdk.gnome.orgrepository.
This six-month effort wouldn't have been possible without the whole
GNOME community, made of contributors and friends from all around the
world: developers, designers, documentation writers, usability and
accessibility specialists, translators, maintainers, students, system
administrators, companies, artists, testers and last, but not least, our users.
GNOME would not exist without all of you. Thank you to everyone!
Our next release, GNOME 3.30, is planned for October 2018. Until then,
enjoy GNOME 3.28!
The GNOME Release Team