There is a new index in the Web of Science Core Collection: Emerging Sources Citation Index (ESCI). The index expands the citation universe and reflects the growing global body of science and scholarly activity.
“ESCI complements the highly selective indexes by providing earlier visibility for sources under evaluation as part of SCIE, SSCI, and AHCI’s rigorous journal selection process. Inclusion in ESCI provides greater discoverability which leads to measurable citations and more transparency in the selection process.”
Emerging Sources Citation Index can be searched by selecting the Core Collection on the Web of Science platform and clicking on “More Settings”. Tick the Emerging Sources Citation Index box.
ESCI is starting with 1,500 titles and aims to reach 5,000 within 2 years. 40% are in the sciences, 40% in the social sciences, 20% in the humanities. 46% are Open Access titles. By positioning ESCI in the Core Collection, users are empowered to see the largest collection of peer-reviewed scholarly literature possible, while also being able to refine their focus on the highly curated and rigorously selected journals in the Science Citation Index Expanded, Social Science Citation Index and the Arts & Humanities Citation Index.
There is a YouTube video describing the ESCI in more detail here: https://youtu.be/pWoQnFVoIXA