Instagram head Adam Mosseri, who led the launch of Threads, wrote in a post that the tests begin today.

This week has been full of updates on Threads, which is facing increased competition from Bluesky, the decentralized text-based platform that people have been flocking to in recent weeks. Earlier this week, Threads rolled out a custom feeds option that allows users to pin multiple curated feeds on the homepage. Users can create custom feeds for certain topics or accounts, giving them more flexibility beyond the algorithmic recommendations feed or the reverse chronological following feed. The feature has existed for a while on Bluesky, and Meta announced and rolled out its own copycat version in just a few days.