For those that are mildly adventurous, you can try the pre-release of the upcoming pacman-4.1. There are a handful of us who constantly run pacman from git so it should be fairly safe. All bugs found are to be reported to the bug tracker. (Only one issue found so far – in the rarely used pkgdelta script).
I’ll make a post about all the new features when the final 4.1.0 release is made – hopefully before the end of the month.