release notes-
the ajax library of asp dot net now including
all asp web forms server controls which were
included in the main ajax-control-toolkit.It
also let use most ajax control toolkit controls
in MVC of asp dot net and html applications.

the beta software of asp dot net ajax library
is being released.whatever if your choice is to
use main ajax control toolkit then download it
by going to -

ajaxcontroltoolkit.codeplex.com/Release/
ProjectReleases.aspx?ReleaseId=33804 page