Too little information at this point to know. It's all speculative except we know it happened during a Superdraco test and there was the plume seen in the picture. Some people that might possibly know says that the plume is hypergolics which also says something happened with the Superdracos. We'll need more information to know the extent of the damage to the capsule. Definitely a significant loss if it is lost as that was the capsule to be used for the IFA and the next capsule in line is the DM-2 capsule.
Edit: It's destroyed. Here is a video of the anomaly:
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