Microsoft typically releases information about the upcoming waves and their planned features closer to their release dates.
#bcopendiscussion is a community-driven discussion hashtag that users can follow on social media platforms like Twitter to participate in discussions about Microsoft Business Central.
To get the most accurate and up-to-date information about the 2023 Release Wave 2 for MS Dynamics 365 Business Central, I advise keeping an eye on official Microsoft communication channels and attending any relevant events or webinars conducted by Microsoft or its partners.