Logic Pro 11 announced, will it break all my NI stuff ?

Although it's a new version number it looks very much to be an evolution of Logic 10, I can't see anything in there that would change fundamentally how it works. However no one knows till it comes out, I guess there will always be a chance but just as much with any new version.

Yeah I'm not pleased about that, not something I would use. And really STEMS is a very limited and formulaic approach to decomposing and remixing music. I would have thought a DAW like Logic which caters for a much broader range of artists and composers than just people who make music with drums, bass and vocals would be better off integrating something that can decompose layers regardless of whether they contain drums, bass and vocals or anything else - something like Spectralayers would make more sense which can do this without needing to constrain it to a few standardised types of sound - it could use Spectralayers in fact if ARA2 is fixed but they don't mention that.