Hearing this news, I immediately upgraded, opened regedit, and changed my driver back to "pulse"
When I opened winecfg, the panel still displays "winealsa.drv", but offers choices of "Default" or "Pulseaudio" for all devices.
Clearly, this is not the original alsa driver, which still has my custom "Out: Pulse" option along with several dysfunctional alsa ports.
As far as I can tell, this driver is fully functional and midi support works without any need to reconfigure my software.
Just a misprint?