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Welcome to the Serial Modem wiki! This page contains some unofficial plans on what's coming up.

Here are rough plans for upcoming releases:

• v2.0.0-preview1: 02-Apr-2026
• v2.0.0-previewX: 30-Apr-2026
• v2.0.0: 18-Jun-2026
• v1.x.x: not planned but made on a need basis

New features for v2.0.0 release:

• Re-designed HTTP client: https://github.com/nrfconnect/ncs-serial-modem/pull/201
• Re-designed TCP server functionality: https://github.com/nrfconnect/ncs-serial-modem/pull/196
• nRF Cloud over CoAP (replaces MQTT): https://github.com/nrfconnect/ncs-serial-modem/pull/174
• CoAP client
• More standard and dynamic handling of CMUX channels: https://github.com/nrfconnect/ncs-serial-modem/pull/133

Other notes:

• v2.x.x releases are backwards compatible from AT command API point of view with v1.x.x.
• There will likely be limited number of exceptions to simplify the Serial Modem to avoid code size expansion.
• AT#XCMUX=2: We are considering removal of switching the AT channel when starting CMUX. AT#XCMUX[=1] will likely remain and AT+CMUX is definitely available.
• Full MFW FOTA: We are even thinking of removing since it's only practical for nRF9151 DK with external flash. Full MFW update through DFU would still be available and that is a more realistic approach for end products. If you have concerns on this, please contact our customer support.