It's that time of year again, when Samsung shows off the next iteration of its massively popular Galaxy smartphone. A heavy focus on the number 4 and a slew of teasers leave little doubt what we'll see, but the exact hardware and software details of how the Galaxy S IV (4?) will outdo its last effort remain shrouded in mystery. We'll be live on hand at Radio City Music Hall with the details as they happen, and Samsung is promising a live video feed here. The fireworks kick off at 7PM ET tomorrow, look below for your locally adjusted time and bookmark our liveblog and event hub pages now (relive the 2012 Galaxy S III unveiling here).