Wow, Apple. I'm not usually one for the "planned obsolescence" talk but AirPods Max seem just like that.
You’ll have to wait for the AirPods Max Pro.
While I hate the Max monicker (it sounds so cheap), I also think Apple overuses and waters down the Pro label, which should be reserved for speakers and headphones with lossless audio support.
Just because they didn’t mention it doesn’t mean they won’t support it at time of launch, or that they don’t have another announcement for WWDC.
After pushing wireless for so long it would be incredibly surprising and a poor launch strategy not to release new lines of AirPods/Beats headphones with Apple Hi-Fi support.
It would likely require a new solution instead of relying on Bluetooth codecs.
Obviously they won’t support it magically in 4 weeks, or they would have announced it today. I can imagine they realise it doesn’t make a difference for most users, and that if you do care you‘re willing to invest in an external DAC and high-end speakers.