In August, Indians GM Chris Antonetti said that Manny Acta would be back as manager for 2013. August was a loooong time ago, apparently, because the team just announced that he will not be back for 2013. Sandy Alomar Jr. will replace Acta for the final few games of the season.
The Indians totally cratered in the second half. They went 5-24 in August and are 10-14 in September. Maybe no manager could have saved this team, but when you skid out of control like that, someone is likely to be held accountable.
As for the future: Alomar was a popular candidate when Acta was hired, has been mentioned as a managerial candidate elsewhere and is much-loved in Cleveland. This may be a short audition in the run up to being made the permanent skipper.