As seen here- http://forums.spiralknights.com/en/node/93938#comment-840200
"there is goin I be a shadow Magnus line with freeze chance, starting with the Magnus."
So lets talk about it then, shall we?
My thoughts are that we don't know if the magnus line will have new mechanics or not- as it would be awfully disappointing if the iron slug weren't fixed, given our new information about the so called shadow-magnus-freeze line.
It'd outclass iron slug 10 to 1 though, given that shadow damage is far better than normal, and that it has freeze- which would enable the user to charge spam heavy damage onto a mob.
You mean information someone posted in a thread that they weren't supposed to? You might as well discuss from the leaked pictures then.
Here's something relevant though, at least one part of that sentence is likely wrong.