Facebook is ramping up for some kind of announcement tomorrow, as press have been invited to Facebook HQ for an event.

Facebook is building up their platform, recently introducing Places to compete with Foursquare.

Some speculation about tomorrow’s event include:

• Facebook for iPad (at last!)
• Overhaul of Facebook Events (hinted at by the wording of the invite)
• Updates to the Places feature
• The announcement of the Facebook phone

I’m personally betting against the Facebook phone, but I wouldn’t put it past them. I’d love to see a decent Facebook client for iPad, but I’ve been unimpressed with anything for iOS from Facebook since Joe Hewitt left.

I’m going to make an open prediction, that Facebook is going to add something that someone else is already doing, allowing its users access without having to leave their Facebook page. Facebook’s strength is the platform, they will be playing to their strength.

I guess we’ll see tomorrow.