The ticketing companys website contains a listing for the concert

Last week, we discovered behind the scenes of Nintendo Australia’s Zelda 25th Anniversary minisite, HTML coding that suggested the Zelda Symphony Orchestra may be heading to Australia. Well now, Ticketmaster (who’s handling the ticketing distribution for the Los Angeles and London concerts) has pretty much confirmed the orchestra will head down under with a listing for the concert on their Australian website. Searching "zelda" brings up a link to what may soon be the page where you’ll be able to buy tickets for the event.

There is also another Ticketmaster page related to the event, which comes up on a Google search.
Unfortunately, neither mentions dates or locations just yet. Zelda fans, if you’ve been waiting to exhale, do so now. We’ll let you know you know the dates and locations as soon as they’re put up.