I find this amusing. You seem to think this 'Street Grimoire' is coming. It is not an upcoming product, though. Look here
http://www.shadowruntabletop.com/products/upcoming-products/
It is so far out that it is not even listed there.
The Upcoming Products page is obviously out of date, given that most of the products listed on it have already been released.
Exactly. The Upcoming Releases page is completely unreliable for charting what is getting released due to not getting regularly updated. Which as I recall, their SR4 site was unreliable in this regard as well (I don't think an entry for Dirty Tricks or Stormfront was EVER put on that section of the site). Need I recall that Boardroom Backstabs 3 was put on the Upcoming Releases page, and that one STILL isn't out?
While going by CGL's social media and the occasional blog post (which nowadays is mostly for their non-TRPG SR products) is hardly ideal, it's a better indicator of what is-isn't coming out.
Unless if you're saying that all those posts regarding R&G and Stolen Souls was completely coincidental and had no bearing at all on the timing of their releases.