Researchers are studying various aspects of urothelial carcinoma, including its histological variants and diagnostic, therapeutic, and prognostic implications. Different subtypes of the disease, such as plasmacytoid and sarcomatoid urothelial carcinoma, are being examined, as well as new approaches to diagnosis and treatment, including the use of artificial intelligence and advanced in vitro models. The field appears to be evolving, with updates on grading and risk stratification methods also being reported.