As Elon Musk awaits his doctor’s permission to fight Mark Zuckerberg in an on-again / off-again cage match, the two billionaires’ companies continue to spar in the consumer adoption arena. Meta forged ahead with Threads’ aggressive update schedule today as it tries to challenge Musk’s erratic X (rebranded Twitter). Zuckerberg announced today that the young platform now supports sharing posts to Instagram DMs, custom alt text for photos and videos and a new mention button.