The openSUSE team has announced the availability of a new development snapshot for openSUSE Leap. The new snapshot is labeled openSUSE 15.4 Alpha.
https://get.opensuse.org/testing/
The fourth minor release of Leap 15 has entered its alpha development stage. During the Alpha phase, regular Alpha images will be built on a rolling basis until mid-February, when the point release is scheduled to transition to a Beta build phase. The beta submission deadline is February 16, according to the roadmap. The Beta phase has a similar model until the General Availability of the release. The rolling builds stop after the Beta phase is complete, and Leap transitions into a maintenance and security update phase upon becoming publicly available." Additional information can be found in the project’s release announcement. https://news.opensuse.org/2021/12/02/alpha-release-leap-test/