There's been an increasing trend of previously-open-weight models going closed-source once they reach a certain size (and size is proportional to capital investment). That the latest release will be open-weight is not necessarily a given just because the previous one was.

It was literally in the announcement from Black Forest Labs:

"Open Weights version of FLUX 3 Image is launching in the coming weeks."

https://nitter.cf/bfl_ai/status/2105734605621825738

What trend? BFL was always non commercial. The "only" trend would be qwen image not being apache anymore.