Yip. They've stated that Real Time is the Animal Planet replacement.
Then later in the same paragraph they will tell you Real Time is for people on lower packages that haven't seen the content before.
Two purposes I suppose.
Personally I would much rather have channels like Comedy Central, Nat Geo and Nat Geo Wild upgraded to HD. Which reminds me, when is the promised new Discovery channel launching? This was announced when Animal Planet was removed - and I am pretty sure the announcement say "by August".... which has only 11 days left.