Ok, here is what CHile has currently in its inventory in a total of:

Ships to be decomitioned (3 County & 3 Leander):
4 Barak (County)
2 SeaCat (Leander)
1 Phalanx (Leander)

Excocet 38MM
Excocet 40MM

Ships to be keept in service (T-22):
2 × Sea Wolf

Excocet 38MM

Ships to be comitioned in the coming years (2 M/2 L Class, 3 T-23):
Seawolf VLS (T-23)
Seasparrow (M/L Class)
Standard SM-1 MR (L Class)
4 goalkeeper (M/L Class)

Harpoon I/II (M/L Class)

Now:

The Excocets are going to be retired over the time to be changed to the Harpoon IIs (makes sence since most of the new units are equiped with them)
Excocets are still going to be used as part of the weapoms inventory for the Superpumas

As for the AA capabilitys:
The Seacat is defenetly going to be retired.
In stock there will be 4 Barak & 1 Phalanx.

The Planes for the T 22 are not completly clear. It is thought to be installed one gun & as you said, the option for renewal of the Sea Wolf are whide.

As for what I have heard so far the idea would be to sell the Baraks & install eather the ESSM or the RAM on the T 22 ( & posibly changing the Sea Sparrow in the M Class to ESSM to in the future).
Also the T 22 would recive the Phalanx.
Finaly the option is analiced to install CIWS on the 3 T 23 which could be eather the Goalkeeper, Phalanx or RAM.