The Fallout 3 mod, "The Last Paladin" will officially be Released on August 3rd, 2011, as long as there is no delay or unforseen problems. And yes, that is the same release date as Mothership Zeta. Beta will for sure be Spring 2011, and a gameplay trailer should be expected after the new year. There is also a new Facebook Fan Page for The Last Paladin. A new teaser trailer nicknamed "O Death" will be coming out soon, so keep an eye out.
Check
Thelastpaladinfallout3mod.wikia.com
Wix.com
Facebook.com
for updates and info.