This just coming in from ESPN.COM:
Two high ranking officials from the World Umpiring Association and US Today confirm that Major league baseball wants to equip itself for instant replay on disputing home run calls by August 1st.
"It's all premature," MLB spokesman Rich Levin told USA Today. "Nothing has been decided yet."
Personally, I think this was going to happen anyway, but its really interesting to see how quickly this all developed. Maybe because the recent rash of blown calls the most obvious one being the Yankees vs Mets game on Sunday Night baseball recently.