ROS7, GPS, PPS and NTP

The older GPS wiki suggested this:

Note: The time is not stratum 1 as RouterBOARD devices do not have PPS implemented as of RouterOS v6. This might change with new NTP server in v7.

Do the LTAP and KNOT devices have PPS wired in? Can the DCD pin on the serial port be used for PPS from external GPS units? If so when can the ROS NTP server use the built in GPS & PPS to act as a stratum 1 time reference?

PPS support would be very handy, even if it’s just on the x86 image.
It would be fantastic on Mikrotik devices that have a serial port.

Bump, see also http://forum.mikrotik.com/t/knot-can-it-support-pps-to-be-a-stratum-1-ntp-server/151053/1 - any chance ROS7 on KNOT will work as GPS synchronised NTP server anytime soon?