Pretty sure there's going to be a second season as I've heard things about it such as the focus being on new heroes, Sylar becoming a regular, and Hiro being in another century.
training was so DBZanyways, can't wait, and dammit Ando, running to your grave!hope next ep pwnz
[...]The "Origins" series will consist of six stand-alone episodes, with each one introducing a new character and telling his or her back story. They'll take place within the "Heroes" universe but won't be tied into the main arc of the series, although one or two regular characters may pop up.It will also carry an interactive element: After all six "Origins" episodes air, viewers will be able to vote on which character joins the main show the following season.[...]
The massive cast and sprawling plots finally collide in Manhattan, but does anyone really think they'll see that much-prophesied nuclear apocalypse? Nah. "But how it all winds up is pretty unexpected," says creator Tim Kring. "I don't think anybody will say 'I saw that coming.'" The episode's final 90 seconds will reveal next season's theme, focusing on the hidden ancestry of Hiro Nakamura (Masi Oka). As for who stays and goes, Kring says, "I have to make room for new characters, but I'm easing up on the slaughter---not everyone's going out in a casket. Some will simply go away, others are still around but we just won't see them. Sorta like life."