While not a new release, this Apple IIe emulator for Windows somehow escaped mention. Keonwoo Kim’s Apple in PC emulates two or more Mockingboards or one Phasor, making games such as Ultima IV and Ultima V sound wonderful.
Version 0.1.22 is available as source code for you to compile. A ready-to-run binary version of 0.1.21 is also available (click the 5th link down on the left to reach the download page).