From Chris Mortensen of ESPN, who was the first to have any information more specific than just a neck injury:
Green Bay Packers tight end Jermichael Finley suffered a bruised spinal cord in his neck Sunday but continued to have encouraging signs after undergoing further tests today at a local area hospital. Nevertheless, his evaluation will be an extensive process, according to league sources, with his return indefinite.
The story of Finley's injury continues to evolve. The final word on his potential return doesn't figure to come for at least a couple days.
"I firmly believe that any man’s finest hour, the greatest fulfillment of all that he holds dear, is that moment when he has worked his heart out in a good cause and lies exhausted on the field of battle – victorious."