Comment # 25 on bug 1187264 from Sarah Kriesch

openSUSE is working (the same as SUSE) with Upstream/Factory first.
openSUSE Tumbleweed for s390x is based on Factory. openSUSE Leap is using the
same base packages as SLES (incl. kernel) since our 15.3 (equal to 15 SP3)
release.
Therefore, it is correct that SLES kernel patches will be available in our
stable release openSUSE Leap, too. That is a closed partnership. SUSE is giving
something (kernel and stable base) to openSUSE. openSUSE is giving applications
and the latest packages to SLES.
SUSE Kernel Developers are testing in their home branches of OBS the latest
kernel sources (together with patches). IIf it is working as expected, that
will be submitted to Factory (Tumbleweed). We have got a review process with
multiple stages. That can take some days. If that all has been passed, then we
will receive a new kernel in our rolling release openSUSE Tumbleweed.
That is one reason that openSUSE Tumbleweed is recommended for Developers. We
are receiving all with possible latest versions from upstream.
Leap and SLES are one fork of Tumbleweed with more stability from the
Enterprise.