Ordered mine plus some more stuff.
Sapphire ATI Radeon HD 5870 1024MB GDDR5 PCI-Express Graphics Card
Gigabyte GA-EX58-UD5 Intel X58 (Socket 1366) PCI-Express DDR3 Motherboard
Intel Core i7 920 D0 Stepping (SLBEJ) 2.66Ghz (Nehalem) (Socket LGA1366)
OCZ Reaper 6GB (3x2GB) DDR3 PC3-14400 (1800MHz) Tri-Channel
Corsair TX850w SLI PSU
Samsung SpinPoint F3 1TB SATA-II 32MB Cache - OEM (HD103SJ)
Roccat Kone V2 Max Customisation Gaming Mouse
3xAkasa AK-FN053 120mm Smart fan (Blue)
3xAkasa AK-FN051 80mm Smart Fan (Blue)
2xAkasa AK-CB002 PWM Fan Splitter Cable
Prob get another 5870 at xmas for some crossfire action
The 5870 replaces two 4870's in xfire. May not be much of a perf improvement but it's a single gpu with none of the profilng/scaling issues of dual gpu set ups - and I'll be getting another card later when the price drops a tad anyhow.
I always get the two cards rather than just an x2 - when I upgrade my old stuff goes into my spare pc - so this time round one 4870 will be sold and one 4870 in the spare pc. An x2 would be a waste in the spare. I'll do the same when it comes round to upgrading the 5870's
besides - two watercooled xfire cards look awesome