Notes from NTSB press conference Denver 04:00Z Tuesday:
first main gear marks on rway at 1,900 feet from threshold - nose gear marks at 2,000 feet.
approx 700 feet more before plane left runway
approx 2,000 feet more until plane came to standstill
Max speed achieved, 119 kts; last speed recorded (see below) 89 kts.
both CVR and FDR shut down at the point where the plane returned to earth after going slightly airborne when crossing taxiway WC - takes a 3g shock to shut off the recorders. Scene confirms that main gear did leave ground for about 100 feet as the plane shot over the berm north of WC.
Only two vocalizations on CVR - "Takeoff power" and a call for rejected takeoff. CVR records thumps and rumbles starting at 41 seconds after brake release until CVR shutdown.
slash mark on one tire, but could be impact damage
did not appear to be a brake failure - brakes tested OK
i.e. some data on the progress of the event, but not much yet on the primary cause, not surprisingly
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separately, CNN source reports captain was among the seriously injured and still hospitalized and not available to investigators.