The phrase "a small preview of" is correct and usable in written English.
You can use it when introducing a brief glimpse or summary of something that will be elaborated on later.
Example: "In this article, we will provide a small preview of the upcoming features in our software update."
Alternatives: "a brief glimpse of" or "a short overview of".
This is a small preview of what millions of dollars in ads attacking House Republicans will look like.
Hovering the mouse pointer over a link causes a small preview of the linked page to pop up in a tiny window, making it easier to decide whether to click through to the page or not.
Hence to assist entrepreneurs in their fund raising endeavors the list above collaborates data from angel list and xeler8 to give a small preview of prominent angel investors in India.
Unfortunately, I believe that China's stock market crash is just a small preview of the country's coming crisis; an even worse phase of the crisis will begin when China's credit and property bubbles pop.
Recipes are organized by virtual cards, which present either just the drink name or a small preview of the ingredients involved depending on how many you have in your library.
That being said, the center now splits your notifications more intelligently between top-level categories like "All," "Missed," and "Today," the latter giving you a day-at-a-glance view into your To-Do's, plus Stocks, Calendars, Weather and a small preview of Tomorrow at the bottom.
Visual seeking (aka Thumbnail Scrubbing) is where a small preview picture of the video appears when you move your mouse over the scrub bar.
Maphumulo is due to release his sixth studio album next year and we've got a small preview in the form of first single, "I Will Find You".
Anyway, here's a very small preview of the type of stuff that'll be at the show tomorrow.
Perhaps it's all those Olympic medals, but our small preview of Fairtrade gold wedding bands from Argos several weeks ago has led to a rush of queries about clean gold.
Having a stack for each member of my family made it simpler to keep track of conversations, and I appreciated having all my photos in one stack, since I am often searching back through old e-mails for images with the stack, I could just click on the stack to see small previews of each one.
