The Hitachi LT+ 2.0 FW should be out pretty soon though. Testing was completed by c4eva & team a few days ago. I'm sure they're just making sure on things before releasing. I wouldn't be surprised to see the release this week sometime.
I have an older Xenon w/Hitachi drive myself that I'd love to flash with the LT+ 2.0 FW. Maybe you can wait a little while longer afterall for those Hitachi drives.