This landed and got played today:
Overall, a nicely balanced and well performed program.
Graun: Overture and Allegro in d minor Graun WV A:XI:2
Nichelmann: Concerto for Keyboard Concertante in c minor D-B M. Th. 169
Frederick II (the Great): Sonata for Flute and B.C. in c minor "pour Potsdam" no. 190
Graun: Concerto for Viola da Gamba concertata in a minor Graun WV A:XIII:14
CPE Bach: Symphony No. 1 in D major Wq 183, 1
(I ordered mine last weekend from Arkivmusic; not sure how they got it to me a week before Amazon's official release date).
A fortepiano was used for the solo in the keyboard concerto and the basso continuo in the flute sonata, although no details were given about the particular instrument used.
This being an anniversary year for Frederick, I expect more releases of this sort to appear.