Hi, you released Matplotlib 3.0.3 a couple of hours ago, and the set of wheels is incomplete. There are no wheels for Windows for example. However there is a .tar.tz - this is quite bad, it will break installation and CI for everyone who tries pip install matplotlib and is not set up to build from source. Example: scipy/scipy#9423

If the rest of the wheels are coming within hours, I suggest to leave things as is and document in your release procedure not to do this. If there's an issue and other wheels will take longer, I suggest to remove the 3.0.3 source release for now (existing wheels can stay).