David Barron says that the 2012 season will be broadcaster Milo Hamilton's final year calling Astros games, which he has done since 1985.
An Astros official would not confirm the scheduled news conference, and Hamilton declined comment Tuesday afternoon. However, two people with knowledge of the situation confirmed plans for the announcement, and local advertising agencies received notice Tuesday that Hamilton has scheduled his announcement for Wednesday.
2012 will be his 57th year in the booth calling baseball games.