Yes, there is an American company named Rhodes making brand-new Rhodes pianos, with the real and original electro-acoustic tine design. They have been selling them for about the past five years. I played one briefly at a Winter NAMM convention.
The modern pipe organ is certainly an electro-mechanical instrument, and there are plenty of pipe organ builders out there in 2012. The difference, though, is that with the pipe organ, the electronic and mechanical elements produce the sound but they don't amplify it; that part of the sound is acoustic! The keyboard mechanism, stops, the on-off valves for each pipe*, and the air compressors are all electronic or electrical.
*unless it's a "tracker" organ, in which the keyboard, stops and valves are all purely mechanical and not controlled by servo-motors or circuit boards. But even tracker organs use electric compressors to blow the air through the pipes.
The Yamaha CP Pianos
As a footnote, the Yamaha CP-70 and CP-80, produced from 1976 to 1985, were the last popular electro-mechanical keyboard instruments to be produced, as far as I know. They were real baby-grand pianos, with an ordinary piano keyboard mechanism and hammers, but they lacked a wooden soundboard, and therefore made virtually no sound acoustically. They had pickups over each string and were designed to be amplified.