Yeah it is. I was waiting for an F4n since I'd figured that if they'd made the same improvements to the F4 as they'd done with F8 -> F8n that would likely be good for me.
As for this F6: personally I'd rather they hadn't taken the backwards step of dispensing with the XLR outputs and the dual SD slots as 4 XLR inputs were ok for me. That said, this 32-bit float "raw" style of sound recording is potentially a game changer.