I placed my batch 7 order 2 days ago but haven't received a confirmation that payment for chips has been received yet. I'm thinking Steam is just busy getting everything in order currently, hopefully it comes soon.
This is most likely the issue. In the past 24 hours BKK released what he believes is the final revision of his K16 board. SB is probably lining up the parts for final changes and stuff now and working his ass off with the rest of his supply chain. With production expected to start very soon I'd be surprised if SB has much free time at all. I know it sucks waiting, but every time I've had a question or placed a order or whatever SB has gotten back to me and always had a great answer.
Nothing to worry about. Just time. The enemy of all.