From the CSO:

Esteban Batallán was the selected candidate after the final round of auditions for CSO principal trumpet in Chicago in June. As part of the audition process, he is required to perform in the orchestra for two weeks this coming season with Music Director Riccardo Muti conducting, before a final decision is made.

Esteban, 35, this week gave up his principal seat with the Hong Kong Philharmonic.