A NamUs profile was created yesterday (6-29-14):
https://identifyus.org/en/cases/full_report/12776
The age is listed as "adult" but gender, race, height, weight etc. are all "unsure/cannot estimate."
"Wrapped in a pink bath robe, curtains, and a home-made mickey mouse print bed sheet."
I'm guessing the pink robe led investigators to think this was a female victim, but it sounds like the perp used whatever furnishings he/she could find to wrap around the body.
There's no mention of the trash bag in the NamUs report.
And while Disney-themed fabric is widely available at craft stores, it would be helpful to know what size bed the homemade Mickey Mouse sheet fit -- a twin bed, most likely a child's, or a larger size? Did the curtains appear to be from a child's room or another room of the house?
I agree with those who think LE is withholding some information, probably for good reason. In addition to virtually no information on the UID him/herself, there's no information about the manufacturer of the robe and curtains (tags) or the specific print on the bedsheet (which would be useful in determining how long ago the fabric was purchased and made into a sheet.)