its available, but there's no point on using them because they are made specialy for high resolution editing... That means if you're image is not 2K or larger, no point.
HD editing is good on regular computers, 2K and 4K.... is still left for high end editing systems... look up SGI thats one of the companies which is used for that..
What's cool about the SGI systems... and or the Nvidia Quadro plex is that it can handle the resolution, uncompressed... thats like madness... its huge...
Anyway... for now Avid is the best you can get to industry standard on a PC, if on Mac, people are still fighting over Avid or Final Cut Pro.... personally I like Avid because you can cross over systems, from Mac to Pc and back... so you're not limited to work only on a Mac... etc, like Final Cut.
Only recently FCP as been getting a little advantage, but you've got to decide what works best for you.
GL!