I proposed the creation of https://lists.wikimedia.org/pipermail/wikitech-announce/ some time ago, but then we haven't been using it much. Following the idea of integrate, consolidate, and pause or stop, I think it better to close this list definitely and channel similar energies toward https://blog.wikimedia.org/c/technology/ and our tech social media.
If nobody is against, I will write a last email for that list, and then request its closure.
Subject: Closing wikitech-announce distribution list
Dear Wikimedia technical contributor, you are receiving this email because you subscribed to the wikitech-announce distribution list. We are closing this list in order to reduce the number of overlapping communication channels. No action is required from your part.
You can follow the Wikimedia Tech activity in the Wikimedia Blog, the wikitech-l mailing list, Google+, Twitter, Facebook, and more. For details and links, check
If you have any questions, just reply to this email. See you around!
Engineering Community Manager @ Wikimedia Foundation