An overview of the new features can be found here:
http://wiki.lyx.org/LyX/NewInLyX21
-You can download LyX 2.1.0beta1 from http://www.lyx.org/Download/.
+You can download LyX 2.1.0beta1 from ftp://ftp.lyx.org/pub/lyx/devel/.
We hope you will enjoy the result!