Microsoft Dynamics 365 Business Central has two major release waves each year:

• Release Wave 1: Typically becomes generally available around April.
• Release Wave 2: Typically becomes generally available around October.

Microsoft usually announces detailed release plans about two to three months ahead of general availability:

• January: Plans announced for Wave 1 (April–September).
• July: Plans announced for Wave 2 (October–March).

Between these major releases, Microsoft regularly issues minor monthly updates, including hotfixes, improvements, and regulatory updates.

The exact dates may vary slightly each year, but the April and October timeframes remain consistent.