Although an introduction into service is not expected until 2124, NS has begun field tests of the next generation TPM-4. This is a clean sheet design though, as some parts of the missile are not ready yet, the test version is currently fitted with the engine and guidance package from the TPM-3 Omega 2. The TPM-4 being tested is said to be 20% smaller than the TPM-3 family and thus will have implications for weapon loads when ships convert to it later in the decade.
The TPM-4 will be more agile and faster than older missiles. A new engine with a 270 degree vector thrust will be tested next year.
