Please note that this is an announcement for the Freedesktop 22.08 SDK & Runtime, not for the KDE 5.15-22.08 SDK & Runtime. We’re still testing the new KDE Runtime and it may not be ready yet (notably missing a qtwebengine.BaseApp branch and likely some themes).
Please wait for the official announcement like we did in KDE runtimes 5.15-21.08 and 6.2 released.