If previous generations are any indication, the next Outback will likely borrow liberally from the new Legacy, including its platform and engines. In addition to its five-door, station wagon design, the Outback will almost assuredly feature added body cladding and a higher ride height than the Legacy. Subaru's big push with the new Legacy will be to improve interior quality and comfort with liquid-filled engine mounts, an acoustic glass windshield, increased sound deadening, new infotainment systems and new safety tech. All of these will probably appear in the Outback as well.
After its rumored New York reveal, the 2015 Outback is expected to go on sale around the same time as the new Legacy in the summer of 2014.