Not yet. CHDK (the Canon Hack Development Kit) is working on a port for the SX50, but according to their website, it's in very early alpha right now, so if you don't know your way around the camera yet, you don't want to mess with it. However, it will probably be available eventually.
Here is the link to the SX50 on the CHDK website, http://chdk.wikia.com/wiki/SX50