Aaron Schnuth, anime podcast pioneer and fellow lain fan, sent me an email with the relevant links to the goods sold on cospa.com:
1. Lain shirt - Close the world, Open the nExt. (shown above)
2. Lain shirt - Knights of the Eastern Calculus
3. Lain cup - DJ
4. Lain strap
In my opinion, these are a big deal for any serious collector of lain merchandise. Maybe you've seen lain shirts here and there at various conventions, but official/licensed shirts are rare.
I'm not sure why these are being sold all-of-a-sudden, but it might be related to the