Do something about it or at least contact us. Period! TASCAM has released an El Capitan compatible driver for their long now discontinued US-200, an interface I also own, and I was able to use it with El Capitan on my MacBook Pro, to discover that all my apps and plugins work just fine, a fact that shows that many other companies are El Capitan ready!!! I’m willing to do the same on my iMac in my music studio, but sadly I have a Fast Track Ultra 8R and I’m stuck to Yosemite. As long as Apple releases new OS, you should release new drivers. We are customers that have supported your company and we demand to be supported. This kind of silence and delay is unprofessional and unacceptable. Is there a driver coming any time soon? El Capitan is out since September, most of us like it, and we would like to use it for one year, according to Apple’s plans, and not for seven or six months because of Avid’s delays… Please, release a driver ASAP, or inform us about the end of support for this product (which is stated for 2018 in your site). There's a big thread in your communities site and there’s no response from Avid about the future of this hardware only some comments by a moderator. Many people are expecting long now El Capitan OS X 10.11 compatible drivers for Fast Track Ultra 8R. I've sent two e-mails to this Moreno somebody in this thread mentioned.