Xbox's Mike Ybarra teases something for Xbox One Preview members

Microsoft’s director of program management for Xbox, Mike Ybarra, says that Xbox owners should pay attention next week for something related to the Xbox One preview program. he Xbox Preview Program is how Microsoft tests new Xbox One software ideas and services before they’re available to everyone else, it’s completely voluntary.
Here is the tweet:
https://twitter.com/XboxQwik/status/688519146548498433?ref_src=twsrc%5Etfw
One thing that we could expect in a preview update is the new party feature where you can see who is in the party before joining. Other than that we are not 100% sure what is coming. Also, a new list of BC games is bound to be announced so stay tuned for that as well.