Not exciting at all, but a nice incremental upgrade. I always enjoy incremental upgrades from Apple as they're usually significant, and 4 years worth of increments add up to big leaps, to the point my 8 year upgrade cycle is usually quite exciting. Though a bit disappointing that it came with a $100 (almost 10%, above inflation) price bump. There's not much point to a spec bump when it's paired with a price bump, and…
But is it really a price bump? Yesterday the 512GB M4 Air was $1200, now the 512GB M5 Air is $1100, at least apples to apples. Kinda is, kinda isn't.
The entry-level option however does constitute a forced bump in minimum-spend on the part of the customer of $100, even if in a spec-vs-spec comparison there is no bump. And you can argue this isn't great for an entry-level apple laptop mostly for casual users that don't need or are willing to pay for 512gb.
But the cheaper macbook is set to be announced tomorrow, probably filling some of the gap the M4->M5 left behind. So I think that probably neatly resolves it. Looks like it all makes sense.