All Series 60 phones from Nokia, Nokia Series 80 Developer Platform 2.0 devices, and Nokia 7710 multimedia smartphone are capable of handling point-to-multipoint connections - given that you create all the connections from one device (master) to slaves. (Scatternet not supported)
The Bluetooth Point-to-multipoint example in Forum Nokia Web site demostrates this.
Nokia Series 40 Developer Platform 2.0 devices (such as Nokia 6230) are only point-to-point devices.