Their IGG updates average about 1month apart so about 8 May 2016 is my bet (for an update, not for ship date).
Their faecbook page constantly publishes meaningless content. In today's drivel we learn of the awesome: "Reverse Polarity Protection Mechanism, which prevents any problems that might arise from inserting the battery into the Batteriser upside-down"
And the photoshop is a peach, where to even begin with that. Just take care, those pixels are sharp!