Gotta admit...I am HUGELY tempted to buy a batch of these to cluster together (Maybe 10-16 of them in total), and run Windows 10 on them...would be a sweet little supercomputer to have at home xD
Out of curiosity, how would you implement it? Using Arch Linux as a base and setting up a Beowulf Cluster seems to be what most are doing. But it may not be a panacea. I've heard that one of the limitations for clustering with the Pi is the lack of power in the CPU. So while it worked rather well for some distributed processing scenarios, parallel processing cases didn't work out quite so well. Maybe with the faster ARMv7 and that additional RAM it will be less an issue?
Another consideration - the roughly $2k (all in) you'd need to budget to do it right would allow you to build a bumpin' PC with a high-end i7 and a ton of RAM. With that
machine you could run VMs until the cows come home. So it might be more practical for normal PC use if you don't actually need a render farm or similar non-mainstream environment. Because unless your app supports distributed processing, having a cluster won't get you anything.
be fun to build one purely for esthetics