I remember when Halo 3 came out and people were debating the legendary ending. Well in the beginning of the game Johnson tells Chief, "why do you always jump(referring to him jumping out of the ship in the end of Halo 2) one of these days your going to land on something harder then you are."
I made a thread on the official forums speculating this was foreshadowing of a Halo 4(this is when they claimed 3 was the end) because in the end of the legendary scene Cortana tells chief to "jump" a warthog into the back of the frigate. He does and their half of the ship gets ripped between the portal and the end end part shows it floating toward a mysterious planet.
I said Johnson was right, he always does jump and he eventually landed on something harder then him, another planet!
Most people thought it was a great catch! It was a HUGE thread and many people commented, lots speculated and flamed of course. But look at it now.......I was on the money!
But in this case the quest seems so small compared to what it would lead into, I dont think it has ANYTHING to do with the new expac. =P