Why Fable 5.2 and not 5.5?

My hypothesis - OpenAI and Anthropic are locked in battle. Whoever takes a step, the other one mirrors.

Based on this hypothesis, I think we can expect to see a new Astra model soon given the new Fable release.

And it could be that Anthropic released Fable 5.2 and kept 5.5 in reserve, in case the new Astra model performs better than 5.2