Where Did All The Premium Cabin Passengers Go?

I have a trip to Vegas coming up in a couple of months, and I decided to take the red eye back. However, red eyes from Vegas are pretty short which makes for a less-than-stellar night's sleep. Given that + the fact that I'm going to need to stretch a bit to re-qualify for 1K on United this year + the fact that I was able to clear a regional upgrade in advance, I decided to book my return trip via SFO, with the red-eye to take place on a p.s. SFO-JFK flight.

Now I know premium cabins tend to fill up to closer to the date of departure, but I can't remember seeing a seat map quite as empty within 2 months of departure as my two flights are showing right now:

LAS-SFO

SFO-JFK

The first flight doesn't surprise me all that much, given that Vegas is very much a leisure destination - but it's the Sunday night p.s. red eye that's a bit of a surprise. I'm sure it'll fill up in the coming weeks, but if not - it looks like I've got a pretty lonely flight ahead of me! Guess I'll have to console myself with the "famous" seat 9A on United p.s. business (if it doesn't have the most leg room in the entire fleet, I'd really like to see what does):

View from seat 9D on the other side of the aisle

What do you think the over/under is on the number of empty seats these flights end up having up front?

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