Reddit has introduced several new features to enhance the 'Ask Me Anything' (AMA) experience:

• AMA scheduling: This allows users to plan their AMA sessions by choosing 'AMA' as a post type within the scheduling flow on desktop, with the ability to set a start time up to 21 days in advance.
• 'Remind Me' button: Interested users can receive a push notification 24 hours before the AMA and just before it starts, to ensure they don't miss it.
• Guest collaborators: AMA hosts can now add up to five guests to answer questions within an AMA session.
• End notes: Hosts can add notes at the end of the AMA session to indicate it has finished and share links to other social channels.
• Sorting AMA comments: Comments can now be sorted by 'Answered' and 'Unanswered', making it easier to follow the session's discussions.

To schedule an AMA session on Reddit, you can now select 'AMA' as a post type within the scheduling flow on the desktop version of the platform. This allows you to start immediately or set a start time for your AMA session up to 21 days in advance.

AMA hosts can add guest collaborators to their session by utilizing the new feature that allows up to five guests to answer questions. Each guest can respond via their own profile within the AMA, making it ideal for groups such as bands with multiple members.

The 'Remind Me' button next to AMA posts on Reddit serves to notify interested users about an upcoming AMA session. Users will receive a push notification 24 hours before the AMA, as well as right before it begins, to maximize attendance and spread awareness about the session.

The new AMA features, including scheduling and the ability to add guest collaborators, are rolling out on desktop first and are planned to be available on Reddit mobile apps soon. A specific date for the mobile app release has not been mentioned in the text.