update:
Here is direct link to developers site:
http://islayer.com/files/istatmenus2/istatmenus_build111.zip

this one works too but its the same build 111 despite 112 in the given file name:
http://islayer.com/files/istatmenus2/istatmenus_build112.zip

enjoy and try to change the build number in the url in the next couple of days

update 2
Another link in case you cannot download it from the links above ( someone took his time and uploaded this to rapidshare ):
http://rapidshare.com/files/273844550/iStat_Menus_Installer.zip

update 3 ( hope its final )
This is another link from islayer / bjango for the latest build of istat menus 2.0 beta for Snow Leopard 10.6:
http://islayer.com/apps/istatmenus/getupdate/

Right now it redirects to build 114 of iStat Menus 2.0, hopefully after the beta – same link will redirect to final.

Final update
iSlayer / Bjango finally release iStat Menus 2.0, here is the link to download:
http://www.islayer.com/apps/istatmenus/download/