When will iFixit restock the Transparent backplate for the iPhone 4?

Hi. I recently had joined the site mainly because I had encountered a video clip on the internet relating to being able to quote on quote, "stylize my iPhone 4" by replacing the backplate of my phone with something new and intriguing. The cool thing about this was that I discovered the Transparent BackPlate on this website as well as other websites, however I had stuck with this one mainly because I've heard that iFixit has a good reputation for iPhone parts and whatnot. In conclusion, I really wanted to buy the transparent backplate and was considering on buying it at the moment I'm writing this however, it's seems to be out of stock, which obviously is a downer. I was wondering how long I will have to wait before being able to purchase a backing because I will definitely buy it, it's just the matter of having the ability to buy it online, which I cannot at the moment. I did give iFixit my email address to be notified however it would be nice to known around the exact time iFixit will release more of this product so I can get my hands on it before it sells out again. Thanks again and I hope my question can be answered to its fullest ability.