I have been tempted to go ahead and buy a Sub to complete my 5.1 set up but have been reluctant to do so... I feel like I have been waiting for ages for Sonos to release an update to its Sub so that it fits in with its current range of speakers. For example, the Sub is glossy and all the other speakers are matte. The newer speakers have the circular pair button with the infinity logo whereas the Sub has the older square button. These may only be small things but I could see myself spending £699 and a brand new redesigned model is released the day after lol.