That is great news, congrats and thanks to all involved! Support of
Wikimedia/MediaWiki developers and software reusers has gone through a
quantum leap in the last year or so, and this is another solid step towards
creating a more healthy FLOSS ecosystem.
I'd also like to echo what Trey said: while some of the largest problems
with our open source ecosystem (such as documentation and the lack of
public roadmaps/guidace) have been settled or are being settled
reassuringly, code review remains a pain point. And while that's something
that will need the support of all Technology/Audiences teams, there is
still need for a team that can push for that; I hope Technical Engagement
will be empowered to do so.