terraly:
Indeed, they do appear to be the same image.
Check the ancillary (SP!) data, they ARE the same image as acquired by the MOC, just in a different format for display.
One logical explanation would be that they made public the entire data set on April 4, but due to the extreme interest in the area surrounding the "face" they made sure to put those pictures up first.
Sounds great to me, but *if* this is the imaging they were referring to in the response to FACETS, it's very dishonest to imply that they've recently acquired these images, as they are derived from data acquired and released earlier.
I still think that these are the pictures NASA is referring to in the letter-
I would agree, but somebody has to clarify when an image is. Images are obtained by the MOC, and relayed here. Display images are derived from the scanned image acquired from the MOC. To say that an image is newly acquired in a context such as the letter from NASA is only accurate if you are referring to the display image, not the original dataset. The context however implies NEW information. It's misleading, to say the least, especially with the mention of a "complex set of MGS spacecraft operations" performed in response to the initial request from FACETS. (*IF* NASA is referring to the image you pointed out earlier.)
although the letter writer was obviously not also the web master and his explanation of the situation is rather confused.
Ah! We agree.
Are we to believe there are more images of the area unreleased?
Believe what you wish. That is not for me to decide (of course).
On what do you base this belief?
If your revise "belief" to be "suspicion", then I would say human intuition based on what I've read/heard. I will also say that NASA's response could be a hoax, but I think FACETS would be in some deep legal troubles to "forge" such things. Another idea is that the writer(s) of the letter to FACETS' lawyer was/were lead to believe something which is visibly not true, leading to the doublespeak in the response from NASA regarding images. They could have also simply made a mistake (being humans, after all).
*Only time will tell*.
--I hate grammar and speyulling--