Yes, you heard me, Winamp5, not 2, 3, or 4, is being developed!
(The "5" is just a working title, and may or may not be used.. The (slightly amusing) thought is that Winamp 2 + Winamp 3 = Winamp 5; but not everybody around is sold on that idea. We'll see.)
This version will integrate Winamp 3 skin and script support into the Winamp 2.x platform.
This will allow users who do not wish to have complex freeform skins to use classic Winamp skin(s), with the full performance of Winamp 2.x. Those who wish to use more advanced Winamp3 skins can do so as well. The integration will be seamless.
Initially this version of Winamp will not support Wasabi components. That may or may not change as we go forward, we have yet to see how worthwhile that will be. We have and will be extending Winamp 2.x's plug-in architecture greatly to allow much of the same functionality that can be accomplished with Wasabi).
We also plan on adding CD ripping and burning capability for this release.
We are aiming to release this version sometime (read: towards the end of) this summer (2003).
News source: Winamp