The FreeRDS Wayland back-end was talked about earlier this month and is a FreeRDP-based RDP server with Remote Desktop Services. FreeRDP itself already has a Weston back-end.
Since last talking about the FreeRDS Weston support, a segmentation fault issue has been corrected and mode-switching support has been implemented for handling desktop resizes when changing the resolution of an open connection. Refresh rates are also properly reported in this latest version.
The FreeRDS support in Weston comes in at just over one thousand lines of code. While it might not be polished and merged ahead of the Wayland/Weston 1.4 release in January, the latest code for it was published on Wednesday and can be found via the Wayland-devel list.