It's been 15 days since the WWDC keynote where Apple announced the next major updates to its operating systems, including iOS 12, macOS 10.14 Mojave, watchOS 5, and tvOS 12. The first developer betas were released following the event, and today, the second round has been seeded.
iOS 12 build 16A5308e obviously fixes quite a few issues from the original seed. Banking apps like Citi Mobile and Bank of America should now work properly, and so should the EA games that weren't working. Skype still might crash, but that was fixed for Skype Insiders 12 days ago, so the general public should see that update soon enough.
Of course, there are still plenty of issues to be aware of, and there are some new ones. Netflix might not work properly, and Twitter might not either. The Weather widget doesn't work, and you also won't be able to upgrade to the beta from iOS 10.2 and earlier via iTunes (use OTA instead).
As far as macOS 10.14 Mojave build 18A314h goes, the link for the release notes doesn't seem to be working, but you can expect the same list of fixes, known issues, and new issues. tvOS 12 build 16J5303e actually doesn't list any new issues, as it only has resolved and known issues.
Apple isn't reporting a new watchOS 5 build in its developer center. The original watchOS 5 beta was pulled due to update issues, and re-released a week later. Presumably, we'll see a new build later this week, or even later today.
If you're waiting for the public betas for iOS, macOS, and tvOS, those should be available soon, probably later this week. Now that a second, more stable build is here, Apple should be gearing up to release them to testers that haven't paid for a developer's license.