Good news punters, BT's Fusion wireless VoIP / cellular offering will be turned loose for home use tomorrow. Even better, the new system will use WiFi rather than Bluetooth like the system we previously saw. The service is designed to work with BT's OpenZone WiFi hotspots and should initially support three UMA handsets: the Nokia 6136, Motorola A910, and Samsung's P200 before the month is out. A total of 20 handsets should be up and running on the service by Q3 2007, according to BT. Initially, Fusion will only be sold to customers of BT's own broadband service with a more open plan, including a pre-pay option coming later in the year.