Dunno if anyone has seen these yet, or how long they've been out, but thought some people might find it useful.
D'Addario 8-String Nickel Wound Electric Guitar Strings EXL140-8 10-74 from Strings Direct
I remember when there was some talk of the 8 string pack when they came out. I play an 8 but the gauges don't really work for me. I use 9's with a .72 or .74 for the low string. I find if I use anything heavier on the baritone scale it gets harder to bend and play lead stuff.