Was tempted by a 9800gx2 but atm I'm skint, loads of rumours flying round about 9900gtx's and a 9900gx2 in June/July '08. Here's a couple
GT200 to become 9900GTX and 9900GX2, launch date set to July*Update* - Expreview.com
9900GTX & 9900GTS to be released as soon as early July - Overclock3D Forums
I'm holding off for now to see if the 9800 price plummets come June or if the 9900 starts at a 'reasonable' price.