The Eleven Rack is an interface that can be used with several DAW's, including Pro Tools which is bundled with new Eleven Racks.
Now is a great time to buy an Eleven Rack. The price is plain cheap for all the 11R can do, plus you get Pro Tools 10 and a FREE upgrade to Pro Tools 11 when it is released. If you are buying new, you will also get an included iLok v2 and the ERXP pre-installed. AND for a limited time you get up-to 4 free plugins!
http://www.avid.com/US/specialoffers/Get-Plug-ins-on-Us
I did a short review video of the 11R a week or so ago that hits on the major points, check it out if you wish:
http://www.youtube.com/watch?v=94VGKhYFe5w
You can also browse my Youtube channel for many more in-depth vid's of the 11R.
And you can see the 11R spec's on the official Avid site.
http://www.avid.com/US/products/eleven-rack_2