Another SpaceX Update

Update form Elon:

DemoFlight 2 Launch Update

The static fire has moved to Friday (California time) and launch to Monday, January 22. We have not encountered any new issues – the shift in timing is primarily to provide for additional risk reduction activities on site, as we continue to operate with a healthy paranoia.
As stated in the prior update, there is a high likelihood that the dates will continue to change, given the broad array of vehicle robustness upgrades. This will remain true all the way up to the final few seconds of the countdown, as our new health verification software executes hundreds of systems checks between engine ignition at T-3 sec and liftoff at T-0, when the hold down clamps release the rocket for flight. This is a critical phase for verification, given that the vehicle will have undergone substantial state changes throughout the first stage and avionics system.

---Elon---