As u/ConsciousStop said the level 6 modules are still being rolled out, so we don't have all the details. But to answer your particular question, Python, Pandas and scikit-learn will be used for sure in the Data Science specialization, as they are tools heavily used in the industry
UoL have a MOOC on Foundations of Data Science that may give you a hint of the technologies they use in the course: https://www.coursera.org/learn/data-science-k-means-clustering-python check the syllabus for more detail.