^ 6.06.12016 StartmeupHK Venture Forum - Elon Musk on Entrepreneurship and Innovation. StartmeupHK Venture Forum--2016. via InvestHK YouTube channel: Invest Hong Kong. 26 January 2016 [28 January 2016]. (SpaceX discussion at 30:15-31:40) We'll have the next generation rocket and spacecraft, beyond the Falcon and Dragon series ... I'm hoping to describe that architecture later this year at the International Astronautical Congress. which is the big international space event every year. ... first flights to Mars? we're hoping to do that in around 2025 ... nine years from now or thereabouts.
^Coppinger, Rod. Huge Mars Colony Eyed by SpaceX Founder Elon Musk. Space.com. 2012-11-23 [2013-06-10]. an evolution of SpaceX's Falcon 9 booster ... much bigger [than Falcon 9], but I don’t think we’re quite ready to state the payload. We’ll speak about that next year. ... Vertical landing is an extremely important breakthrough — extreme, rapid reusability.
^Boyle, Alan. Coming Soon From SpaceX's Elon Musk: How to Move to Mars. NBC News. 5 January 2015 [8 January 2015]. The Mars transport system will be a completely new architecture. Am hoping to present that towards the end of this year. Good thing we didn't do it sooner, as we have learned a huge amount from Falcon and Dragon.