JetBlue Airways Corp. is revamping its planes, and while there are plenty of bells and whistles, there's a little surprise that may leave you groaning. Along with a larger, 10-inch touch screen, more than 100 live television channels, and a new link to the aircraft's Wi-Fi system that lets you watch your own content on the plane's screen, the new versions of the A320 will also include a dozen more seats squeezed in among the 150 already there.