What secondary payloads, if any, are launching on the inaugural flight of Falcon Heavy?

Question

Overshadowed by a silly, yet awesome primary payload — 'a cool colored cool electric sports car playing a cool track' on to a heliocentric orbit, are there other satellites/secondary payload Falcon Heavy would lift on it's maiden flight?

I know of Planetary Society's LightSail 2, for one.¹

Has there been a mention of any other secondary payloads? Also, information on orbits of secondary payloads and speculation of deployment sequence, if possible.

---

EDIT

1. LightSail 2 is scheduled for and April launch.

Answer 1

There are no known secondary payloads flying on the Falcon Heavy maiden flight. ^{Excluding what's in the Roadster's glove box... ;)}

Planetary Society's LightSail 2 is flying on the Space Test Program-2 (STP-2) mission of Falcon Heavy, the third flight, notionally penciled in for April 15, 2018. Other smallsats flying on this launch include the Green Propellant Infusion Mission, which itself is quite interesting.

Answer 2

Let's look at the picture as seen from the side (Not official photograph, but...

If there was going to be a secondary payload, it would have to be between the car and the payload adapter. There clearly isn't room there to do so.

I've heard rumors that there could be a second point where secondary payloads might reside. There is an open space near the engine that could host a small payload. This was a possibility some years ago, but I haven't found anything to be the case more recently. As Kuldeenp answered, there doesn't seem to be any other payloads indicated on this particular flight.