According to Terry Heley from Microsoft, the following are the timeline for the sunset of Microsoft Dynamics GP as Microsoft rolled out in the late September of 2024.

End of Life Timeline:

• September 30, 2029: End of product enhancements, regulatory (tax) updates, service packs and technical support.
• April 30, 2031: End of security updates.

As previously announced:

• April 1, 2025: No new customers for GP perpetual licenses.
• April 1, 2026: No new customers for GP subscription licenses.