So I keep hearing about updates to the navigation for 2013, but can't tell exactly what that entails? It looks like MyLink is added and i THINK that just means bluetooth streaming (i.e. Pandora, MP3s, etc.). Is MyLink more than that? Are there other changes beyond MyLink (i.e. hardware, screen size, new core nav capability)? We purchased my wife's Volvo this year and there was a wholesale re-design of the Nav and everything else introduced in mid 2011 which persuaded us to get a 2011.5 or later model as opposed to a 2010 or early 2011. Trying to determine if the 2013 Nav will be significantly different and worth waiting for.