The Lifestyle 650 can decode the Dolby TrueHD codec, however it is important to note that TrueHD encoded media may not always have 7.1 channels. The codec can support up to 16 discrete channels, higher sample rates and carries metadata in the bit stream to assist with decoding. With regard to your question about additional speaker, the short answer is no. The lifestyle 650 is a 5.1 system and is not able to be expanded. We evaluate all emerging audio technology and trends when determining whether to include them in our products. I do not have any information on future products that may include additional surround sound channel options (such as Dolby Atmos). Keep any eye on the website or here in the Community for future updates. Thanks for sharing your feedback!