The original thread has been preserved over at NeoGAF and yields this quote:

That is a lot of fun info to break down. A grappling hook would greatly enhance the already astounding verticality of Titanfall’s unique free-running gameplay, not to mention the possibility of snagging your opponents from mid-air. 

The addition of a handgun called “The Violator” is positively rife with speculation, but it does sound cool.

The final piece of the leak centers around the supposed poster/box art for the upcoming sequel, official information about which is due out June 12th. The poster seems to indicate the Titans now possess a new “shadowing” ability, because the Titan’s and Pilot’s poses are mirrored as they both seem to run along the wall. 

But as always with leaks, take this information with a grain of salt. We’ll know for sure in a few weeks.