So why is the Royal Opera staging this not-very-short-and-undemanding piece after the equally not-very-short--etc. Ring? Simply because when asked, in what and when to make his return to Covent Garden, Haitink had said "Parsifal. 2007". More information on the performances here.
Earlier this year in Zürich, Bernard Haitink conducted a fine Parsifal. Also the London-reviewers (list below) universally praised Haitinks conducting an the singers, especially Sir John Tomlinson and Petra Lang. Though not much praise was allocated to recently deceased Klaus Michael Grübers staging..