To get attention of course to something potentially material to the sp. You don't need to call a halt for bad or blah news particularly in this market as everything is tanking anyway. Could it be just fair news and an attempt to stop the bleed? Well there would also be minimum expectations from the TSX as to the reasoning for calling a halt and they would have to issue it, thus it has to meet with criteria. As to rumours I've heard, and they are rumours, there is reason to expect something encouraging. Just how encouraging, we'll have to wait and see.
The bashers we've seen on this site are hilarious to say the least, spelling with fake accents and making claims that can't really be verified. Such a yawn.