IDAY 7:30 PM, 3RD UPDATE: It’s already setting records for the biggest opening for June and the second biggest weekend openingr of 2013 as Warner Bros’ and Legendary Pictures’ Man Of Steel (4,207 theaters with 3D in 3,357 venues) is flying high at the domestic box office today. My sources have now increased their estimates to $51M Friday, $124.4M for the three-day weekend, and $134.4M for the four-day cume through Sunday. The only other movie in the North American marketplace in wide release, Sony/Columbia Pictures’ This Is The End (3,055 theaters) which opened Wednesday as a counter-programming apocalyptic comedy is looking like $8M for Friday, $20.8M for the 3-day weekend, and $33.1M for the 5-day cume. Refined numbers later.