Speculation is mounting that Facebook could soon be the newest player in the mobile phone market.
The company has invited US journalists to the unveiling of a mystery product next week, amid rumours of a Facebook-branded phone.
The invite simply tells media to "Come and see what we're building" at the firm's Silicon valley headquarters in California on January 15.
Online reports suggest the "what" will be Facebook's much-rumoured smartphone to take on the iPhone.
The company has been rumoured several times to be developing its own phone.
Facebook's apps for existing phones have already been expanded to include many features found in other handsets, such as messaging and photo sharing through the recent purchase of Instagram, Britain's Mail Online has pointed out.
Recent reports claim it has poached engineers from Apple's iPhone and iPad team to work on the project, which is believed to be being built by HTC, the Mail Online reported.