Re: Suggestive, but nothing more, and nothing less
By themselves, organics and methane are no big deal; we've found them all over the solar system. The big deal is that the organics were preserved in an environment where we didn't expect them to survive. The even bigger deal is that the methane varies during the year which rules out most, but not all, non-biological processes and would be expected from biological processes. Like the Viking Labeled Release experiment, these findings add to the suggestion that microbial life exists and detract from the suggestion that it does not.
No proof but perhaps an increase in hope.