There are many TV shows that have ended before their time and fans want to see them back. Squarely not amongst that number is NBC's Heroes. Airing for four seasons in 2006-10, Heroes was infamous for having an excellent first season and then suffering a catastrophic collapse in quality. When the show finally slinked off the air, few people cared.
However, Microsoft and NBC are in discussions to resurrect the show. The thinking is to bring it back as a Netflix-style on-demand series, a bit like House of Cards, but which will air exclusively on Microsoft's download service. This service will launch with the next X-Box (but will probably also be available via the existing X-Box 360) and form part of Microsoft's multimedia-device strategy for their new machine.
Whilst a nice idea, I don't think a new Heroes - even one with a mostly new cast and possibly new producers - is the show to do it with. The show's reputation is in shambles and its return would not really excite that many people. Microsoft would be better off partnering with, say, SyFy and maybe trying to bring a different type of superhero show to the screen...
Now that might work.