IIRC, there's no intention to add it, mostly because it didn't seem to be very good at its job in combat. At least, against Stingers or more modern IR guided missiles. It might've been better against Redeyes and Blowpipes Strela-2s.
Known Issues - Hotfix planned
Objects moving at speed may begin to jitter after some time in mission
Improved spotting - some visual issues may be seen in certain hardware/graphical options combinations - Please report any problems to help us resolve these.
AH-64D Attitude Hold sub-modes are causing occasional oscillations in pitch and roll.
AH-64D BDA message via datalink not implemented, please do not attempt to send BDA.
F/A-18C - Possible issue with display of jamming targets on FCR page
Voice Chat - Aircraft control binds will take precedence over room mode PTT bind
Airflow effect on vegetation not fully synchronised in MP
In game scoreboard does not show kills or losses in MP
MiG21bisFishbedL's post in L-166W-1 AE "Ispanka" was marked as the answer