Please understand that we're only selling safety stock at the moment. Stock is really small, and my general policy is to *not* send out eMail notifications for these small quantities.
I broke this policy for the A4000D flicker fixers a few weeks ago, and they were sold out way too fast for most of the users. So this e-Mail notification thing is really only good if we have "lots of stock" or we're starting to take pre-orders for a new product. This *will* happen when the new version is going into production.