The NTSB is involved in the investigation of the Florida case, but not the others. NTSB investigations are rigorous to the extreme, and move at a pace much, much slower than the media events surrounding the other crashes. Any data that Tesla has regarding the crash will be meticulously picked apart and anything relevant will be published in the comprehensive NTSB report. [1] I imagine there is some force compelling Tesla to be more quiet on that case, whether it is deference to the NTSB, or respect for the fatality. Either way, the data will become known eventually, from quite possibly the most transparent and independent source possible. I look forward to the report.

[1] http://www.ntsb.gov/investigations/accidentreports/pages/acc...