I've written before about the choral car pileup problem, where six choruses perform the same weekend, diluting the audience and tying up every freelance player and the best venues in the Bay Area. Evidently the major West Coast opera companies are trying for something similar. During 2008-09, San Francisco, Los Angeles, and Seattle will be staging part or all of the Ring. San Francisco will have Das Rheingold in June, 2008; I'm just guessing that perhaps Die Walkuere will follow in the fall of 2008 or June of 2009. Seattle will present 3 full cycles in August, 2009, the third presentation of Stephen Wadworth's "green" Ring. Los Angeles will present Rheingold and Walkuere during their 2008-09 season, which was just announced today.
Oh, if this isn't enough, it's widely believed that the Met will stage the Schenk production once more during the 2008-09 series (see MetManiac for details) before Robert LePage's production arrives a couple of seasons down the pike.