While I’d hate to say anything with 100% certitude, I’d bet dollars to donuts that Jones would be playing General Chester Phillips, the Army commander who handpicks Rogers for the Super Soldier program. In the comics, Phillips oversaw the training of Rogers as Captain America and even accompanied him on some earlier missions. In other words, it seems like a part perfect for someone like Tommy Lee Jones.
Of course this is all just speculation and even UGO qualifies their report by saying that it’s a rumor. But it’s a rumor that makes a fair deal of sense and should Jones be able to schedule it alongside MEN IN BLACK 3D, which is also filming this summer, could be news we hear confirmed in the coming days…