Ask the dealer to check the part code. Then see if it can be upgraded and that its suitable for your linked system. They shipped from November 2008 - Feb 2009 I think but dealers probably still sold the earlier edition...
SW 2.0 allows for limited masterlink connection, what ever that means. You still need an RF cable if you wish to link video. SW 2.0 does not work with beolink Video for older TV's like my MX 7000 which is where I stopped asking questions and started cabling. The Avant as a linked TV I am not sure of....
Another one of these little known product updates...
beoaus.