Bus 429,
I don't think it is very nice to just drop the "icing conditions" link without any further comments.
At this stage, nothing has been ruled out, or confirmed about the origin of this accident, and the ones not familiar with this aircraft will use posts like yours to make direct assomptions about the cause of this tragedy.
No offense, but I would like to remind you how difficult it is to find the origin of such a situation, and would advise to remain precautious on the type of information, and the WAY it is posted, at least for the respect of the people involved, the families, until the cause has been identified.
I have myself a few thousand hours on this aircraft type, and the "youth flaws" of this airplane about icing conditions have been once noted, and corrected by further improvements of the de-Icing equipment.
It could be any other technical reason, or human error, or weather conditions.
Of course extreme severe icing could put down any turboprop, and many other class of airplanes.