Link to official press release:  https://www.sfballet.org/about/media-center/press-releases/18_CompanyMembers   Two new principal dancers:  Ulrik Birkkjaer (from the Royal Danish Ballet) and Ana Sophia Scheller (from New York City Ballet) join the Company as principal dancers.  Previously announced:  Jennifer Stahl promoted from soloist to principal dancer.   No additional soloists to the ones announced earlier:  Previously announced were the promotions of corps dancers Isabe