The Bureau of Indian Standards has reportedly approved new battery packs for Samsung smartphones. This certification's discovery may set rumors about the next generation of Galaxy A-series devices off again. It suggests that these phones, as with many of their predecessors, are destined for the Indian market and will amend the line's naming scheme by adding a 1 to each numerical 2019 counterpart (for example, the A20's successor would become the A21). (Galaxy A20 32GB on sale now at Amazon)
The new batteries in question are termed EB-BA515ABY and EB-BA715ABY in the updated documentation, which shows that they were added to an overall Samsung registration on October 7, 2019. These model numbers roughly match those currently linked to the putative Galaxy A51 and A71 (SM-A515F and SM-A715F respectively).
Samsung has indeed adopted a policy of tying the model numbers of its non-removable lithium-ion packs to the smartphones into which they are installed: for example, the Galaxy A50's (or SM-A505F's) battery is known as the EB-BA505ABN or EB-BA505ABU. Therefore, it is quite possible that the new products correspond to new Galaxy A phones. (Galaxy A50 64GB on sale now at Amazon)