Hi guys,
As far as I know the only way to update the install packages via package.el is the following:
* M-x package-list-packages
* U (mark packages that can be upgraded)
This works, but it's a bit limiting. For instance, someone might want to have Emacs check for package updates on startup and install them.
It'd be really great if there were a command `package-upgrade` that would upgrade a package if possible (and maybe a command `package-upgrade-all` that just wraps `package-upgrade`.