Pacman 2.7.7 is ready. Among other things, it has a new XferCommand configuration directive, which makes pacman use an external program for all file downloads. This is useful for people who have problems with pacman's built-in ftp/http support, or require better proxy support through a utility like wget.
You can install packages straight from a server with -A and -U by passing a full URL:
# pacman -U ftp://ftp.archlinux.org/current/pacman-2.7.7-1.pkg.tar.gz
It also includes support for a license field in package meta-data and a --dbonly option for --remove operations.