Deeper look at the new Sony 13.3 inch e-Reader (by goodereader.com)
http://www.youtube.com/watch?v=HZSGZkEEVfQ

click-the-picture
I haven't noticed any zooming(cropping) capability there as yet.
Zooming part of the page by two-points or at least a landscape mode are essential IMHO even on 13.3".