A second Blackmagic Camera has been announced:

IBC 2012, Amsterdam, Netherlands – September 7, 2012 – Blackmagic Design today announced a second model of the Blackmagic Cinema Camera that features passive Micro Four Thirds lens (MFT) mount, so customers now have an even greater choice of lens options when shooting. The new Blackmagic Cinema Camera MFT model supports any Micro Four Thirds with manual iris and focus, and is also easily adapted to other lens mounts such as PL via third party adapters. The ability to use third party adapters to allow other types of lens mount is due to the Micro Four Thirds lens mount being much closer to the image sensor and allowing space for adapters to other lens mounts.

See the whole press release here:
Blackmagic Design Announces Blackmagic Cinema Camera with Passive Micro Four Thirds

I’m going to stick with the Canon EF mount version which I ordered and should be here soon. I’m happy that they seem to be continuing to develop the camera and are thinking about other options.