For the record, Sony's flagship headphones and earbuds, the WH- and WF-1000 series respectively, are refreshed biennially... every two years, not annually.
Sony is expected to introduce the WH-1000XM6 later today after releasing the Xperia 1 VII earlier this week. The long-awaited successor to the popular WF-1000XM5 has now been spotted too, thanks to none other than Sony itself.