I disagree. They were working on 6.x and 7 in parallel, headed by different developers. The 6.x releases had lots of bug fixes/small changes. And 7.0 has requested UI improvements beyond moving to Liquid Glass.
Brent and Stuart blog about it and you can also look at the GitHub milestones for 6.2 and 7.0 to see how much they’re doing.
This link helps explain it and you can also get there from Rob’s.