Rob posted the new image with the following caption:

Hi there.!
As prmised, here is an extra little gift for you, have a great day and enjoy.!

An identical copy of the image was immediately posted to the official-art channel:

1) Equation puzzle

2) Egg curve

3) Colosseum coin

4) 111 205 2205

5) XV and Ø balanced

6) Egg X

7) JA 1967.06.24

8) XV… but also…?

2 new symbols we didn’t see before: a “c” to the left of the numerator, and an “α” or “a” to the left of the denominator.
The carat from the matching “equation” on the gun lines up as well.

9) 1404E210DDFD - 4FA5E227933D2 - 1A3DC