Edit share have just announced that they will be releasing Lightworks on November 29th with the mac version being available on the 19th December 2011. The source code will become available at ‘some point’ in the future, but Editshare are working hard with the professional editing community to ‘aggressively develop Lightworks’ until its the best NLE there is . It will remain ‘free’ although the professional version will support the codecs you would want (Pro Res Red R3D) and will be available for a yearly subscription fee of £40/$60. Read the whole announcement on the link below.