Yeah, I'm confused too.
ABC World News is (I think) the standard network evening news show. But, I would have assumed it was already in HD, and what does the OP mean by "this morning"?
ABC News Now (no "World") is an internet channel that is also carried on FIOS. (And in my area, on TVs mounted over gas pumps.) Not aware of them having HD plans, but I guess they could. But again, it doesn't have "World" in the name.
And either way, what does it have to do with DISH?