Microsoft’s Windows RT-powered Surface has been… polarizing to say the least, leaving many a gadget fiend pondering the prospect of buying the more powerful Surface Pro instead. The Redmond-based company has been keeping quiet when it came to the Pro’s more salient details, but Microsoft has finally come forward with some new info — the Surface Pro will be available in 64GB and 128GB models in January 2013, which will cost users $899 and $999 respectively.