It is a much less important release (for features) than 3.7, which for example added dataclasses and lots of typing and asyncio stuff.
The most significant change in 3.8 is a notoriously controversial new infix operator. Even it's supporters would say that it's a niche usecase.
> It is a much less important release (for features) than 3.7, which for example added dataclasses and lots of typing and asyncio stuff.
That's funny because my take is the exact opposite: dataclasses are not very useful (attrs exists and does more), deferred type annotations are meh, contextvars, breakpoint(), and module-level getattr/settattr but not exactly anything you can't do without.
Assignment expressions provide for great cleanups in some contexts (and avoiding redundant evaluations in e.g. comprehensions), expr= is tremendous for printf-debugging, posonly args is really useful, \N in regex can much improve their readability when relevant.
$dayjob has migrated to python 3.7 and there's really nothing I'm excited to use (possibly aside from doing weird things with breakpoint), whereas 3.8 would be a genuine improvement to my day-to-day enjoyment.
The biggest improvements between 3.7, 3.8, 3.9, and 3.10 are in `asyncio`, which was pretty rough in 3.7 and very usable in 3.9. I use the 3rd-party `anyio` library in a lot of cases anyway (https://anyio.readthedocs.io/), but it's not always feasible.