Of course nobody is expecting Maemo 5 to be full of 3rd party goodies and this is it. The platform is kinda’ new and the developers never got time or will to start building apps for it.
Therefore, Nokia doesn’t say much about how many they are and what are they doing (the 3rd party apps); it seems though that some of them are:
– Documents To Go (DataViz)
– Skype (chat, call, widget)
– GTalk (chat, call, widget)
– Picasa sharing
Take a look at the movie below and bet what the others are (the camera is not focused); the time frame when displaying the apps is 5:52