Does anyone know if Smallville is going to maintain it's position on the CW?

Recently on the CW Supernatural has been shown in Smallville's place. Plus, not to mention CW as shown previews, that on sept. 20th Supernatural is coming back, but berkata nothing about Smallville. However, another tunjuk is coming on in Smallville's place. I know there is a new season. It was mentioned in a magazine. The setting was at a comic convention with Tom Welling, but that's all I know.