npub15ez6qx20y58fyr2lkrgt2uma7vsdwzmwr6n2vmnkx77km0x43e9s0cflh2 (npub15ez…flh2) normally I'd say "all and none"; "none", as it's just business as usual – and when looking back a year later the prominent ones often do not look that prominent any more; it also matter a lot on what you do with Linux what one considers prominent.
That being said: the printk stuff to finally enable PREEMPT_RT obviously is really an important milestone.