WOOT!! I've got a Project Spark beta licence :)
My kids won't leave me alone as they are dying to try it out. Shame it's Win 8.1 only (Xbox 360/One to come apparently) at teh moment and I only have one laptop (work) with it on. All others in the house are on 7, and I'm not at all impressed to see the ridiculous amount that Microsoft want for an upgrade license - circa £70-£80 - which makes me stare at the prices and wonder 'why'?
Admittedly we at EduGeek did pick up some of the upgrade licenses when they were on offer for £25 the other year, but the current price is plain silly.