I'd like to address that I have recently purchased the Beta. After installation I prompted myself to advance directly into the multiplayer setting. However, when I got to the end of the loading screen it did not appear to show any servers.
Update from comment by Fireball; default query string (without refresh) seems to be:
"not (gametype = 'DAYZ' or gametype = 'DAYZ_M' or hostname like '%dayz%' or mission like '%dayz%') and not (reqBuild<=108906 and requiredVersion=77)"
Looks like there is one 'not' too many.