Not for a self contained unit, your thinking of the actual home heaters that plumb into the existing system I think.
Those have come a long way as well and I might pick one up next year or if a ac unit bites it this year.
^^^ this is a self contained one.
The important thing to remember for heat pumps is they don't work well if the outside temperature drops below about 40F (about 4C). I have a dual gas/heat pump system which gives pretty good results.
Yeah, efficiency drops off quickly the lower the temps but they have made serious gains in efficiency the last few years. My intent would be to replace the ac units and have it to augment the furnace. I haven't decided whether to get a geo one or not.
