No, it's open weight. You wouldn't call applications with only Apache 2.0-licensed binaries "open source". The weights are not the "source code" of the model, they are the "compiled" binary, therefore they are not open source.
However, for the sake of argument let's say this release should be called open source.
Then what do you call a model that also comes with its training material and tools to reproduce the model? Is it also called open source, and there is no material difference between those two releases? Or perhaps those two different terms should be used for those two different kind of releases?
If you say that actually open source releases are impossible now (for mostly copyright reasons I imagine), it doesn't mean that they will be perpetually so. For that glorious future, we can leave them space in the terminology by using the term open weight. It is also the term that should not be misleading to anyone.
However, for the sake of argument let's say this release should be called open source.
Then what do you call a model that also comes with its training material and tools to reproduce the model? Is it also called open source, and there is no material difference between those two releases? Or perhaps those two different terms should be used for those two different kind of releases?
If you say that actually open source releases are impossible now (for mostly copyright reasons I imagine), it doesn't mean that they will be perpetually so. For that glorious future, we can leave them space in the terminology by using the term open weight. It is also the term that should not be misleading to anyone.