You won't see any Ody's listed as towable after '04 in the official documentation but people have and do tow them up to at least 2010 models.
OP asked about the '11's and they won't be in any "official" list since Honda says they aren't.
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA, SKP
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel