Just replaced my 6 year old MBP (mid-2009 version) with a new rMBP. I want to make sure I'm aware of all the differences in capabilities, basically. AFAIK, I now have the option to utilize Handoff. The only other differences I'm aware of are hardware based: Force Touch trackpad, HDMI port, and Thunderbolt. What else is new, if anything? I transferred over my data with Migration Assistant, and everything looks to be okay... I'm about to synch my iPhone with this new Mac to make sure things go smoothly. Any other tips or things to look out for?