I downloaded beta 3 for my RP2, flashed my card, booted several times, nothing. Finally gave in and hooked up a monitor and keyboard and the login identifies itself as "Arch Linux 4.1.13-1-ARCH" and the hostname is 'alarmpi'. root/rune, alarm/alarm does not get me in from a console (tty1). Of course
http://runeaudio.local doesn't work either.