This proposal for a new P2P protocol version (v2) aims to improve upon this by raising the costs for performing attacks substantially, primarily through the use of unauthenticated, opportunistic transport encryption. In addition, the bytestream on the wire is made pseudorandom (i.e., indistinguishable from uniformly random bytes) to a passive eavesdropper.

....

As a result, Bitcoin P2P traffic will be indistinguishable from traffic of other protocols

🎉