On April 22nd FSLabs released a major updated v188.8.131.522 for A319 and A320. The update had many improvements, you can read more info about that update on FSLabs forums.
This update v184.108.40.2064 features many improvements. One of the main improvements is replaced high-power engine cockpit sounds with new high-definition recordings and remastered original HD recordings for all cockpit engine running sounds, resulting in a very authentic soundset for the V2500. The full changelog can be seen below.
Additional VATSIM json data now parsed
Pushover print monospace font now used
Hoppie timeout issue fix
Fix for flight phase BNR logic
Fix for FCDC channel input logic to PFDs
Fix for THS rate during roll
Stick input to stick neutral transition smoothening
- External model
Passenger windows texture fix
outflow valve hinge texture fix
FM: Prediction logic fix for descent segment
Fixed logic when not using GSX for boarding
Fixed ventilation inlet logic control
PTU logic minor fix
Fix for dual hyd failures extension/retraction logic
Replaced high-power engine cockpit sounds with new high-definition recordings.
Added underlying bass on buzzsaw which becomes more prominent in climb
Reduced bass on cockpit sounds at engine idle
Cabin engine sounds adjust with altitude correctly
Cabin sounds for initial engine start improved
Cabin sounds for engine idle reworked
Remastered our origional HD recordings for all cockpit engine running sounds, resulting in a very authentic soundset for the V2500
From personal experience, I can say, that this update is very good and FSLabs has done a lot of work.