The taxonomy of the genus Lactobacillus has been revised and species previously designated as lactobacilli have been designated into 25 genera including the emended Lactobacillus genus.
Researchers publishing in the International Journal of Dairy Technology (IJDT) should check the standing of the genus of any Lactobacillus species they are citing using the tool at http://lactotax.embl.de/wuyts/lactotax/ . Sanders and Leeber (2020) have provided a list of important genus changes for probiotic lactobacilli on the IAAP website, please see https://isappscience.org/new-names-for-important-probiotic-lactobacillus-species/ that authors may find particularly helpful.
Lactococcus lactis subspecies cremoris was elevated back to the species level as L. cremoris by Li et al. (2019) refer to https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijsem.0.004727. These nomenclature changes are being implemented by the IJDT.