Seemingly replacing its Beatbox Portable, and more in-line with Beats Pill 2.0, Beats Electronics is rolling out its Beats Pill XL ($300). It shares the namesake shape, but this one is significantly larger at 13.3" long and 4.1" tall. Only available in black, the metal grille and soft-touch plastic are accented by glossy plastic on the back, where there's a handle for easy carrying. Built into the handle are the power button, volume controls, battery…