I don't think they would have opened it up to make reservations if it wasn't going to be ready.
It would cause massive confusion for not only the people who were at BLT and would have to be moved, but those that are using BLT points elsewhere.
Your chances of getting something are probably good, depending on what you want.
I added on there last week because I wanted to be able to book the first weekend in December for my husband and I and wanted to get the 2/8 booking advantage. But I have read that people that called all this week have had no issue getting in.