The support for boards based in PX4 hardware designs, like the Pixhawk, Pixracer and Pixhawk 2, hasn’t been and won’t be removed. We also support other boards and always welcome everyone who wants to port ArduPilot to their board.
3DR hasn’t been funding the project since almost the beginning of the year, an announcement was made at that time and led to the creation of this forum, as we parted our separate ways.
The future looks bright: in a few days we got 8 partners (http://www.ardupilot.com/partners) and we expect to get more in the coming weeks/months. Also we have been very active, see https://www.openhub.net/p/ardupilot for some statistics, including that we have an increasing year-on-year commit rate.