The summit has started today, and it is a four-day event full of exciting announcements, especially on Ubuntu 13.04 and on Ubuntu as a game development platform. Head over to the UDS page to know about Ubuntu Developer Summit.

As Valve brings Steam to Linux, gaming on Linux will become more exciting with native games being developed exclusively for Linux. Going further, Valve must also release Linux versions of its own game titles to support its Steam client.

Valve will open Steam to include all applications.

Linux will prove to be a prospective platform for obvious reasons of openness. Although Valve is working on Steam for Ubuntu currently, they also have plans for other Linux distros in near future.

DOTA 2 is the upcoming game from Valve. It is built by the same folks who made the original custom map for Blizzard’s Warcraft III titled Defense of the Ancients (DotA). Blizzard wants Valve to not trademark the name DOTA. Read on to find out more.

Valve’s Gabe Newell issued a statement on the digital distribution giant’s news portal regarding the hacker intrusion of its systems last year. Newell, the CEO of the gaming company, stated that amongst other harmless data the intruders may have stolen logs that contain credit card numbers and other such things – encrypted mind – and data of all the transactions done between 2004-2008. He further advises everyone to monitor their credit card statements carefully and change the Steam passwords.

Steam forums were broken into, Steam database including user names, hashed and salted passwords, game purchases amongst others stolen.

Valve confirms expansion of Dota 2 Beta

DotA 2 is an upcoming game from Valve. It is a sequel to Defense of the Ancients, a custom scenario for Warcraft III. It is being developed by the same programmer who used to head the programming of the original mod.

Team Fortress 2 is now free.

Valve’s Steam Guard system promises a two-factor authentication system for the Steam Digital Distribution platform. However, with the keys coming from the newer Intel Core processors, AMD users and older Intel CPU users are left biting the dust. Also, how exactly will Steam Guard help with identity management, especially for games?

Valve’s Steam client has been updated with a screenshot manager. With the Steam Screenshot manager, players can take screenies and post them online to their profile. The 1GB sync account free with every Steam account makes sure that you have ample space to publish your teabagging shots with pride.

Well this is a first – for both Valve and Sony. The highly anticipated successor to the really awesome First Person Puzzle Solver That Ate Your Brains Out While Being Ridiculously Funny Portal will very probably be one of the firsts in gaming history; Portal 2’s PS3 version will come with an activation key for the Steam version to play on your PC (or Mac), completely free!

Watch Portal 2 in action with Razer’s Sixense Motion Controller for PCs.

Portal 2, the official sequel to the multi-award winning Portal, has been delayed to April, 2011.