It's official - from next week Insurgency will be available directly from Steam as a free download, making it much easier for you to download and install INS, as well as to keep up with the latest updates.
4 other mods have been selected by Valve to be part of this initiative - Synergy, D.I.P.R.I.P., Age of Chivalry and Zombie Panic. Please check below an extract of the official announcement:
As a part of our continuing efforts to support the MOD community, we will begin hosting selected MODs directly on Steam starting next week. [...] As always, owners of any Source game will be able to download and play all of these MODs for free.
Once installed, these MODs will appear in your "My Games" list and will receive automatic updates just like other games on Steam. Also, these MODs now take advantage of Steamworks, which provides stat tracking and tighter integration with the Steam community.
We're excited to see MOD developers get wider recognition for the hard work they have done, and we hope to support more MOD teams in the future [...]
These are fantastic news for all of us, and a great way to bring new players into the Insurgency community. You can read the announcement directly from your Steam client as well as from this link. Expect more information about this release to be published in the following days and some small server updates in advance.
More information at the Insurgency Home Page.