Basically it is an ATC system improvement programme.
The old system is unable to cope with the present influx of data
hence the new upgrading.Also Mode S info are now
available with the new upgrading. More info about the flight
is available in a tiny window for the Ctlers perusal. No need to
open FPL's like before. Possibly no requirement to pass registration to KLIA Twr.
Italian experts are still fine tuning inputs from Ctlers. Just a bit of the iceberg.