UPDATE - 3rd. July 2009 (Timeline 3 - The Return of the Mandalorians/ GamesRadar Interview)

Taken from swtor.com:

Quote :: The Keeper of the Jedi Archives has entered a new holorecord. Continuing his investigation, Master Gnost-Dural delves deeper into the history of the galaxy after discovering that the blockade that Hylo Visz helped end was a result of the actions of the new Mandalore.

BTC 8 – During a Republic resurgence in the Great War, a bold young warrior rose to fame in the Gladiatorial arenas on Geonosis. Adopting the ancient and infamous title of Mandalore, this young leader amassed an army of Mandalorian mercenaries and bounty hunters. The new Mandalore led his forces to form a blockade and challenge the Jedi Order, effectively turning the tide of the war back in the Sith Empire’s favor.

Watch the third Timeline holorecord, The Return of the Mandalorians, narrated by actor Lance Henriksen.

You can also download a high resolution version of this video.

I shall be uploading the Timeline soon.

There was also a interview released yesterday (7th. July) that was held by GameRadar.

Taken from swtor.com:

Quote :: GamesRadar recently had a chance to sit down with Rich Vogel and Gordon Walton. There are a few minor inaccuracies in the article; for example, we have eight ( classes, not 6 and while class stories themselves are unique, you can share content with other members of your faction if you choose to (the "flashpoint" shown at E3 is a good example of that).

You can read the entire article and get some more insight into the making of Star Wars: The Old Republic.