Thanks for the info Shoggy, Will they be backwards compatible and still have the aquabus interface?

Greeting everyone, Starting to gather pieces for my next build upgrade. I want to use 2 of the D5 pumps with aquabus interface, but they are out of stock everywhere and i don't see them listed on this site anymore. Have they been discontinued? Or are they just in prodcution and waiting to be restocked? Thanks for any info. LAN