Hi Albee,
The BPCs are available now and I'm devoloping the TS33, which is a TS3 with double the volume and 2 4.5" drivers mounted vertically. This speaker shares the Grande 6 cabinet so I can save costs and will be switchable between 4 and 16 ohms. Should be able to get 96 dB sensitivity out of it and will also have a 3" port.
Thanks and talk to you soon,
Louis