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Tommi Rantanen edited this page Apr 27, 2026 · 10 revisions

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-preview2: 25-May-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 (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
  • CoAP client
  • More standard and dynamic handling of CMUX channels with AT+CMUX and AT+CGDATA (Done in v2.0.0-preview1)

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 likely 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.
  • 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 any of the above, please contact our customer support.

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