apt-X is a lossless codec for bluetooth audio, MUCH better than A2DP.
If htc (for example) want´s to pimp a phone with it, they have to pay licence fee to CSR. As there are only a few bt receiver with apt-X, they will not pay and implement it (instead they get crappy "beats")
I think, apt-X is only a kernel-driver, no hardware, but not sure about this.
If so, a kernel chef could cook some additional codec in, but this is not open source codec...
I would LOVE an apt-X enhanced bt kernel for my sensation!