It appears that the Packages list isn't being properly updated.
I'm trying to install kali-linux-top10 for armhf but it fails with this error (even after an apt-get update):
After this operation, 789 MB of additional disk space will be used.
Do you want to continue? [Y/n]
Err http://http.kali.org/kali/ sana/main kali-linux armhf 1.67
404 Not Found
Err http://http.kali.org/kali/ sana/main metasploit-common armhf 1.0.2-0kali0+b1
404 Not Found
Err http://http.kali.org/kali/ sana/main metasploit-framework armhf 4.11.3-2015063001-1kali0+b1
404 Not Found
Err http://http.kali.org/kali/ sana/main kali-linux-top10 armhf 1.67
404 Not Found
E: Failed to fetch http://http.kali.org/kali/pool/main/k/kali-meta/kali-linux_1.67_armhf.deb 404 Not Found
E: Failed to fetch http://http.kali.org/kali/pool/main/m/metasploit-common/metasploit-common_1.0.2-0kali0+b1_armhf.deb 404 Not Found
E: Failed to fetch http://http.kali.org/kali/pool/main/m/metasploit-framework/metasploit-framework_4.11.3-2015063001-1kali0+b1_armhf.deb 404 Not Found
E: Failed to fetch http://http.kali.org/kali/pool/main/k/kali-meta/kali-linux-top10_1.67_armhf.deb 404 Not Found
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing? | 
