Replicant

Not yet.

If dual-sim features cannot be added to existing devices, given the direction that Replicant took we would need to find devices that could be supported by upstream Linux without too much work, that have removable batteries, and that have an isolated modem.

We will need to have finished the port of Replicant 9 or 10 before even starting to look into it.

If such device doesn't exist, then we could still collaborate with people wanting to add support for that kind of devices in other distributions, and/or help someone fork Replicant for devices that we don't want to officially support (as they would be worse for freedom than the one we'd already support, or to hard to keep in working condition for a long time due to the lack of removable battery).