I see no option for windows 8, but I am on windows 8 with Visual Studio 2012 Ultimate.
When using the DacFx 3.0 API (http://msdn.microsoft.com/en-us/library/microsoft.sqlserver.dac.aspx) the DacServices.Deploy and DacServices.GenerateDeploymentScript commands perform poorly when a dacpac is of a reasonable size. This is a curious problem as it is my understanding that DacFx 3.0 is backed up with dbSqlPackage, which has no issue whatsoever with the exact same dacpac.
A script generation or deployment can take as much as 20 minutes to run, which is obviously unacceptable. If this were addressed it would make the DacFx 3.0 API an extremely powerful tool.