You can now set your commute preferences (both in terms of transit time and form of transportation: driving, public transit or walking) and limit your job search to jobs that fit that criteria.
Unfortunately, it's entirely binary. You can't say "a 15 minute drive and/or 30 minute walk," nor is there an option for cycling. Still, it's neat that they've added this feature. I still mostly hate/don't use LinkedIn, though.