The Winlink team has made the following announcement

17 Meters added to the following Gateways that did not already have it, all modes.Frequencies are Center and update your channels lists or enter manually.
This increases the scan time so you may need to try a few connects to catch your desired frequency.
All gateways are Icom 7300 at 50 watts to OCF style antennas, and at government facilities with E-power.

YS1YS EL SALVADOR  18108.5
YN1SN NICARAGUA  18106.8
TI0BCR COSTA RICA  18107.3
HR0COP HONDURAS  18108.7
HI8COE DOMINICAN REPUBLIC 18108.2