I don't know about the newsletter but people tend to find out about the mystery boxes around the middle to the end of the month; it is possible that they might find out before the sale ends but I don't know for sure, however, of the sets you mentioned, I only see Utena part one as a possible inclusion in the mystery box, unless something has changed the others are not likely to be included.
Edit: I just had a look at the AL website and Royal Space Force is in the last chance to buy section, because of this I would imagine that it will be unavailable once either it sells out or the sale ends.
Also Evangellion and Cyber City have already sold out according to the website.