Princess Zelda Sightings Lead to New Side Quests in 'Tears of the Kingdom'

According to multiple reports, The Legend of Zelda: Tears of the Kingdom features 12 side quests called "Potential Princess Sightings!"
One quest tasks Link with investigating a strange voice in the Faron Grasslands at night and speaking with Sagessa in Haran Lakefront Well.
Another quest has Link retrieve stolen farm tools by building an airboat to reach an island, then speaking with NPCs Penn, Izra, and Magda.
One quest starts at Highland Stable, where Link takes on a monster den without gear before speaking to Penn at Foothill Stable.
The side quests can be started by speaking to NPCs like Penn at various stables scattered throughout Hyrule.