From Fedora Project Wiki

Fedora/s390x specific Release Notes

  • installation requires at least 768MB of RAM due the unified initrd feature in Anaconda
  • there seems to be some issue in the threads support because we can see deadlocked applications during the package build process, see bug #720005 for more details
  • the "updates" repository is still empty, but the updates are all built. They just need to be signed before publishing and we are waiting for new hardware for the signing server. They will be released as soon as possible.
  • dependency errors during installation are expected when other variant than "Minimal" is selected for install, those errors shouldn't affect the installation itself

General Fedora 15 release notes are here