TV Everywhere is taking another big step forward.

At this morning's Turner Entertainment Networks Upfront, President Steve Koonin announced that TNT and TBS would become the first national entertainment networks to stream on-air content live across multiple platforms, 24 hours a day, seven days a week.

"Starting this summer, subscribers will be able to watch TBS and TNT live – anytime, anywhere, on multiple devices," Koonin told the crowd. "Tablets and smartphones become television sets, bringing new opportunities for us and for advertisers."

Live streaming will include returning shows – for TNT, that means hits like Rizzoli & Isles, Falling Skies, Major Crimes, Perception and Franklin & Bash; for TBS, there's the second season of Sullivan & Son – and new shows like TNT's King & Maxwell, The Hero, 72 Hours and Cold Justice, and TBS' Deon Cole's Black Box, and Deal With It. Live streaming will also include TNT's award-winning NBA coverage.

Complete details will be announced in the coming weeks, but get ready to watch your favorite programs live anywhere and anytime.

These join live streaming apps for CNN, HLN and Cartoon Network that Turner previously introduced as part of its industry leading efforts. And Turner has already made more than 1,000 hours of programming available on demand to some 80 million homes in the U.S.