Interesting. I've been out of town, and it's also been freezing out, so I haven't been by the site. But if Related is planning an office tower at the site, don't expect anything to happen anytime soon. Unless they are building a smaller, boutique like building (not the full build as shown by Vornado), maybe, but that wouldn't make sense. The need for approvals to build the larger tower is time consuming.
In the meantime, they are continuing with filings for the mixed-use tower. This was refiled just a few weeks ago in December...