You know they’ve run out of ideas when they’re releasing this many versions of the same base model.

I don't think that follows, they should all be upgraded over time to the 6.1 version, we are still waiting on both luna 6.1 and astra 6.1. We should expect these releases, and then a 6.2.

Progress is incremental

dupe: https://news.ycombinator.com/item?id=50248124