Facebook will be announcing new "mobile" focused features on Wednesday, the company has confirmed, sending out invites to a "Mobile event at Facebook HQ" for Wednesday 3 November.

The invite features the company's friends icon with two paper cups on strings coming in from either side suggesting that they are talking.

Although the company hasn't officially confirmed what it will be announcing at the event next week, there are plenty of guesses already going around the Internet as to what they could be announcing.

While some believe that it could be the recently announced desktop features coming to mobile, others are more optimistic about what the social networking company could be about to announce. Will it be a dedicated version for iPad? Will it be the Facebook phone (although that's not due till February)? Or perhaps it's a live chat service, or a video calling tie-up with Apple's FaceTime (Facebook - book + Time = FaceTime); maybe something completely different like a new filesharing element.

The announcement comes as Facebook has just confirmed that it has bought Drop.io, a file sharing service similar to Dropbox. 

"Today, we’re proud to announce that we’ve struck a deal with Facebook. What this means is that Facebook has bought most of drop.io’s technology and assets, and Sam Lessin is moving to Facebook", reads the Drop.io blog.

Following the buyout, the service is now being shut now however:

"In the coming weeks, we’ll be winding down the drop.io service. As of this week, people will no longer be able to create new free drops, but you’ll be able to download content from existing drops until Dec. 15. Paid user accounts will still be available through Dec. 15 and paid users will be able to continue using the service normally.  After Dec. 15, paid accounts will be discontinued as well".