In a note to clients picked up by Forbes, the firm states that Surface sales in the December quarter are shaping up to fall into the 500,000 to 600,000-unit range, well below its earlier estimates of between 1 million and 2 million units. According to Detwiler, Microsoft’s tablet strategy appears to be “in disarray.”

via Microsoft Surface sales Q4 2012- Less than 1 million tablets sold: Est | BGR.