Opera Chic would be surprised if Martina Serafin were to actually appear in LA Opera's Ring as Sieglinde -- OC has good reason to think Serafin will be replaced, replacement name to be announced later (when they find one).
Anyway, replacements aside. Friend of Opera Chic Tim Mangan in February's issue of Opera News has all you ever wanted to know -- with pictures -- about Achim Freyer's staging.