Always interesting timing by technology companies. Here's a post to developers by Microsoft the day AFTER Apple's State of the Union presentation to developers.
Microsoft touting performance improvements the day after Apple amps up performance on pretty much every aspect of the Apple developers infrastructure (Xcode, Swift, APIs, processor and GPU utilization, etc).
I was personally involved in the publishing of this post. The timing of this post and the Apple event didn't even register with us as interesting. We're an engineering team and have zero interest in cross-company tactics like that. Now, if there is an LLVM release you want to tell me about ... ;)
I have no way of knowing for sure, but I doubt a blog post that long, published on an official M/S blog (i.e. probably requiring sign-off) could be written that quickly!
Microsoft touting performance improvements the day after Apple amps up performance on pretty much every aspect of the Apple developers infrastructure (Xcode, Swift, APIs, processor and GPU utilization, etc).
Must be a coincidence...