It's only available for TechNet/MSDN subscribers, at the moment. That can change anytime, so stay tuned. Check this site for possible updates: http://officebeta.microsoft.com/en-us/.Mobile AMD64 3000+, VIA Apollo K8T800 chipset, 1 G RAM, ATIRadeonMobility 9700, 20x DVDRW, C:XPSP3 (55G),D:WIN7 (25G),F:DATA (250G)
Strangely enough, it is available right now. I'm downloading Office Professional Plus at a good speed (should be done in 30 minutes). Seems the Beta site is late, I used a link from Connect to www.microsoft.com/office2010 that worked after a short personal survey.
Mobile AMD64 3000+, VIA Apollo K8T800 chipset, 1 G RAM, ATIRadeonMobility 9700, 20x DVDRW, C:XPSP3 (55G),D:WIN7 (25G),F:DATA (250G)