Home

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: 08-Oct-2026
• v1.x.x: made on a need basis

New features for v2.0.0 release:

• Re-designed HTTP client (Done in v2.0.0-preview1)
• Re-designed TCP server functionality (Done in v2.0.0-preview1)
• nRF Cloud over CoAP (replaces MQTT) (Done in v2.0.0-preview1)
• nRF Provisioning (Done in v2.0.0-preview2)
• Memfault Observability (Done in v2.0.0-preview3)
• nRF Cloud FOTA (Will be in v2.0.0)
• CoAP client (Done in v2.0.0-preview2)
• More standard and dynamic handling of CMUX channels with AT+CMUX and AT+CGDATA (Done in v2.0.0-preview1)
• Updatable bootloaders (Done in v2.0.0-preview2)

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.
• There is no FOTA/DFU plan from v1.x.x to v2.x.x.
• There is no FOTA/DFU plan from v2.0.0-previewX releases to the official v2.0.0 release.
• Application logging will use UART instead of RTT in the future.
• 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.

If you have concerns on any of the above, please contact our customer support.