Foursquare and OpenTable have been partners since May, but unfortunately, it was only possible to make a reservation through OpenTable if you were
So, now, if you're using either the iOS or Android app, there will be a new option through the Explore page of the apps. If a restaurant that you find is part of the OpenTable network, there will now be an option to make a reservation at that restaurant, which is definitely a nice feature.
As we said, the update has made it to both iOS and Android, so you can find it in the iTunes App Store or Google Play Store, respectively. Unfortunately, neither Windows Phone or BlackBerry have not seen the update with the new functionality.