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Microsoft has just invited press to a media event in Los Angeles June 18 for a "major announcement."

Microsoft recently demonstrated a near-final version of its next operating system Windows 8, which is on schedule to release later this year. The company has also been rumored to be in talks to buy Yammer, a social networking tool for business, for $1 billion. According to Bloomberg, that deal is expected to be announced tomorrow. Additionally, the company announced updates to its Xbox gaming console earlier this month and Bing search engine.

ABC News will be at the event in Los Angeles covering it live on ABCNews.com. Share your thoughts about what you think the announcement will be in the comments or with us on Twitter at @techthisoutabc.