Lately a rumor has popped up about Halo coming to Steam...Microsoft has announced that this is not happening.
The folowing is from an article on Kotaku.com
Source
This weekend, many noticed something curious: some Halo titles were listed in the Steam registry. Some assumed this meant that these titles were coming to Steam. According to a Microsoft spokesperson, that’s not the case.
“We currently do not have plans to release any ‘Halo‘ titles on Steam,” said a Microsoft spokesperson to Kotaku.
Sceptical? I wouldn’t blame you.
When folks say there aren’t any plans, it sometimes actually means “not yet.”
It’s worth noting that, unlike other titles which have now been confirmed — like Dyad — Halo 2 and Halo 3 pages were almost immediately taken down and can no longer be accessed. Maybe that means something. Maybe not.