"SLS reached this major milestone less than 10 months after the program's inception. The combination of the two assessments represents a fundamentally different way of conducting NASA program reviews. The SLS team is streamlining processes to provide the nation with a safe, affordable and sustainable heavy-lift launch vehicle capability. The next major program milestone is the preliminary design review, targeted for late next year."
Keith's note: Of course no mention is made by NASA of all the previous work (and considerable expense) that was put into Ares 1 and Ares V - which supposedly supported much of the current SLS design. NASA never mentions these "other" programs - and what they cost - and yet tries to make it sound like they just pulled off a neat low-cost/high speed trick - the same way the advertised "low" cost of Mars Phoenix never took actual Mars Polar Lander development costs into account.