I cannot upgrade the system because of the dependency problem of freerdp.
It requires the package faac but it doesn't exist in the repos. Here is what I get:

# sudo pacman -Syu
:: Synchronizing package databases...
 libre is up to date
 core is up to date
 extra is up to date
 community is up to date
 nonprism is up to date
 multilib is up to date
:: Starting full system upgrade...
resolving dependencies...
warning: cannot resolve "faac", a dependency of "freerdp" 
:: The following package cannot be upgraded due to unresolvable dependencies:
      freerdp

:: Do you want to skip the above package for this upgrade? [y/N]
error: failed to prepare transaction (could not satisfy dependencies)
:: unable to satisfy dependency 'faac' required by freerdp