I am very worried with the launch of Halo 4 coming in December that Halo 3 servers may be coming to an end. Anybody have any ideas if they are shutting down the servers or not?
They are not, the only reason the Halo 2 servers were shut down was because Microsoft shut down support for the original Xbox LIVE service, Halo 2 being part of that, got taken offline.
Halo 3 will be around for many years to come.
Good
But there is a small chance that it could be taken down when the 720 comes out.
Its gonna be a long time before they go down.
Even after 360 came out it was more than 4 years before they took down the original xbox servers. I think 360 servers will last even longer due to the much higher population/ popularity than the original xbox had.