joshuatree
Captain
Crew is about 250, and they are already very good multi-mission FFGs, with very good ASW capabilities. There is no specific ASW upgrade planned that I am aware of. They have an ASW helicopter, ASW torpedo launchers, ASW rocket launchers, bow active and passive sonar, VLS anti submarine missiles, etc. There have been statements to the effect that they also have a TAS capability, but I do not know if that has been confirmed. If they do not, that is the only upgrade I could think of.
I would say changing the VLS to the same system as the Type 052D which could carry ASW missiles is another possible upgrade. Though I'm not sure if that would be considered a type 054B at that point.