Facebook sent out invitations for a June 20 event to promote a “new product” as the world’s most popular social-networking service seeks to attract users with a wider range of services.

The invitation, received by reporters yesterday, said the event will be held at the company’s headquarters in Menlo Park, Calif.

A service that aggregates news stories and posts from other online sources may be unveiled at the event, according to a blog post on TechCrunch.