I'm writing this from a 2016 device that ticks all of the boxes of repairability the announced phone has. Without the GPL, bootloader unlock and a willing vendor (motorola), it's end of life would've been in 2019. Thanks to source availability the community gave it another lease up to today and it's a candidate for a 10+ year phone thanks to kernel mainlining.

While hardware repairability is a pillar, it's only one of two and nothing without "software repair". Sadly even the ecodesign draft proposal (in the EU) goes soft on this topic and criticism of it (by eeb.org) still thinks only in "update duration" instead of the real ingredient of sustainability: software sources and ability to build it.