Thank you for the update, Brion. You've been effectively wearing every hat there is to wear for a person with technical skills in the Wikimedia Foundation. That's an enormously challenging set of responsibilities, and you've managed them very well, both in good times and in emergency-crisis-mode-times. ;-)
Please note that nothing is going to change immediately, and we won't hire a candidate for the CTO position unless and until we're happy that it can work. We'll of course also clearly define the responsibilities of the two positions.
Brion, thank you for taking this step, and for all your hard work over the years doing an impossible job. :-)