As we develop new features, we immediately release them to partners that are participating in our beta program. Once these features have been further refined, we release them to non-beta partners.
You can join our beta program right from Partner Center. Head to the Customize tab, then select General Product Settings. Next, turn on Enroll in Beta Program. If you are using Markets, you can also select only a specific Market to be in Beta.
If you aren't enrolled in the beta program, you will get access to those features at a later date. ETAs are specified in Software Updates.