The One Ring has been a reliable source of Tolkien-related movie news since back in the days of the Peter Jackson trilogy, so while Amazon has yet to officially confirm the series' premise, the claim - reportedly confirmed by multiple sources - is worth quite a bit of consideration. As a character, Aragorn has a lot of depth and there is still so much of his story that hasn't been explored.
The show will be drawing inspiration not just from the Lord of the Rings, but also the many appendices that were published to tie into Tolkien's books. "Starting with a young Aragorn narrative allows connections to his Numenorean bloodline (and to the founding of Gondor)". Not only does Aragorn have a rich life to pull adventurous stories from, but his life is so deeply entrenched in the political, ever-changing landscape of Middle Earth that it'd be a totally immersive story right from the jump. "Plentiful in new characters and familiar ones we already love". Let us know in the comments section!
TheOneRing speculates that, should the series focus at least initially on Aragorn, other characters that could show up include Aragorn's father, Arathorn, as well as Elrond's twin sons, Elladan and Elrohir.
This brings up several speculations but there is a strong possibility of seeing firsthand how "the ranger" was raised by his mother in Rivendell, the influence of elves as a child, and more. Notably, the site says that only the first season will focus specifically on young Aragorn, opening the door for a wider narrative to potentially follow.