Samsung's Galaxy A15, soon to be globally released, will undergo rebranding as part of the Galaxy M lineup. Reports suggest an upcoming Galaxy M15 with a larger 6,000 mAh battery, following the trend of its predecessor, the M14. The Galaxy A15, featuring a 6.5-inch 90Hz Super AMOLED display, MediaTek Helio G99 chip, and configurations up to 8GB of RAM and 256GB of storage, stands out as Samsung's budget-friendly choice eligible for four major OS upgrades.https://www.notebookcheck.net/Samsung-s-M15-budget-smartphone-rumoured-to-launch-with-a-massive-6-000-mAh-battery-4-years-of-software-updates.787629.0.html
Samsung needs to carefully rethink their product ranges, it's getting a bit silly. They just arbitrarily remove/add features and either call it S, A or M series. It seems completely random.