Sony's Sir Howard Stringer played the tease at today's Reader content partnership presser, stating that while Sony could make the device into a multimedia tablet, it would rather wait and see if consumers warm up to current devices. Stringer's watching if people find the form factor "comfortable and helpful" before Sony starts "plowing on a thousand apps" or building a "Vaio Reader." We don't really know how much e-reader acceptance points to the demand for color multimedia tablets, but in regards to the (non-existant, ever-present) Apple Tablet, Stringer says "we're all working on variations of the same thing." Hopefully we'll figure out what exactly he means by that bef