Metro North Harlem Line Third Track Extension

I know the topic of a third track north of Crestwood has been discussed here with a lot of argument about whether or not there's space (usually in conjunction with the White Plains station). Cleaning out my old news alerts, and I came across this very interesting item.

MassTransitMag.com: MTA releases schedule of $8.8 billion on committed work to begin construction in 2020 from prior capital plans

2021: $2.293 million

Second Avenue Subway Phase II: Civil Work for new stations at 106th, 116th and 125th Streets
Purchase 25 standard buses
Planning for Metro-North Harlem Line Third Track
LIRR Jamaica Capacity Improvements design support
Sandy Mitigation: Long Island City Yard Perimeter Protection

Emphasis added above. Anyone hear anything?