http://www.jpl.nasa.gov/news/news.cfm?release=2011-060
Few robust discussions going on in mp circles too:
".....
it's not a good idea to give to the hypothesized companion of the Sun the name Nemesis or Tyche, because Nemesis and Tyche are names of well-known asteroids:
Nemesis = asteroid No. 128,
Tyche = asteroid No. 258."
http://tech.groups.yahoo.com/group/mpml/message/25036
"
The question is not really if WISE could detect a kind of far away gas giant that would have formed where there were no material to make it in the first place, it is to see if the *******s in the world (neomaya and the likes) are going to associate a potential non existing planet with their 2012 non existing Niburu, etc... if you google Tyche, you get a pretty good idea... And if it comes to NASA, something must be fishy..."
http://tech.groups.yahoo.com/group/mpml/message/25035
Bit of a non-story anyway. That WISE may or may not be capable of detecting it is completely irrelevant to its hypothesised existence (and 'narrowly' hypothesised, with not a huge amount of support it appears). Until we find out whether WISE did or did not detect it. Which we may know sometime in 2012. Or not.
Cheers -