Fox News is showing a just released tape showing Fox reporter Steve Centanni and his cameraman Olaf Wiig. Link and more news when it becomes available.

UPDATE: The AP has this story:

A previously unknown Palestinian group released video Wednesday of two kidnapped Fox News journalists and demanded that Muslim prisoners in U.S. jails be released within 72 hours in exchange for the men, a Palestinian news agency reported.

[...]

In the video, the men sat on the floor in sweatsuits and appeared to be in good health. No armed men were seen.

The news agency, Ramattan, reported that the Palestinian group, the Holy Jihad Brigades, had demanded in a statement that Muslim prisoners in U.S. jails be released within three days in exchange for Centanni and Wiig. The group did not say what would happen if the deadline passed unanswered, Ramattan reported.

UPDATE II: Allahpundit has the video at Hot Air.