It's difficult to make out other features with the ongoing construction.

Below is the comparison (zoom unchanged) with the 123m BRP Tarlac that is in the same facility, undergoing MRO.

Namely, these are the Leonardo Helicopter Integrated Defensive Aids System (HIDAS), which includes the countermeasure dispenser (CMD), missile warning system and radar warning receiver.

These are important equipment to help with survivability in the event of a conflict.

The interesting bits:
3/x

-PA Aeromedical Helicopter (Bell 412EPX) is awaiting implementing arrangement with Canada gov, for G2G
-PN Fridate (Full Complement) Lot 1 - Platforms w/ Launchers for Neg. Proc., waiting SND Approval. Php34B budget
-PN ASW Helicopter. SND Approved Neg. Proc. for Php42.29B ABC
2/x

The biggest problem with the KC-130J is likely the long lead time for deliveries, like how the current order for C-130J-30s is taking a long time.

There may be an opportunity for Embraer to provide a great alternative for this requirement.

Especially with how stingy and difficult budgeting would be, it's highly likely that the candidates here are the latter two, with a lot of benefits in choosing the KC-130J - with STOL, the PAF having great familiarity of the platform, and FMS/FMS options.

Masterplan image c/o MaxDefense