a sneak peek of something...

 - Today, Billybob gave us a sneak peek on what's coming up this year.
-  Fall sneak peek. What do you look forward to wearing this fall?
-  What do you think of this sneak peek?   
-  Here is a sneak peek of the new catalog.
-  Coming Soon, A Sneak Peek.
-   I give you a sneak peek at what's coming on Friday, August 20th.

note: even if you find written 'sneak peak' lots of times, and you will... go for this one: speak peek