... *blinkblinkblink* No. This has to be a rumour. "Sailor Moon X"? Sounds like a fanfiction title. I could bet it is a fanfiction title, in fact, but I can't be arsed to google for it.
Still, it would be damn cool if there was another Sailormoon series. If it was good and not bad, of course. Heh... Sailormoon is what got me into anime in the first place, not to mention the internet. I wouldn't be here typing this right now if it wasn't for Sailormoon. I'll have to tell that tale once... though most of my friends have already heard it several times. Heheh.
Can anybody confirm/deny the rumour? (link from Arashi)

*nods* *nods* *nods* *nods* *nods* me toooo!!! SailorMoon was for me the first step into everything. ^_^