Concerning price point, I would imagine this new 1.4 will need to be priced according to how much it can tangibly outperform the Sigma. The Sigma is a great lens on a crop body and is doing very well marketwise, and some even like it for full frame. So I'd think Canon will need to demonstrate a reason not to buy the Sigma, which will hopefully means better autofocus (though my Sigma is actually doing well in this regard) and better off center sharpness when used on FF. I think Canon will be successful, otherwise why even do the new version, and imagine that puts it about $599. I'll be shocked if it has IS though I'd be all for it since it shoots like an 80 on a crop body. Of course it'd have a completely different price point in that case.