I wonder, if I will buy one... I think I have 50w left on my psu...
However, I am still undecided because of its performance outside those specific new algos (I have the feeling, it wouldn't bring much more on top of what the 290x and the 780ti are already bringing...)
That's exactly my line of thought. I would buy 4 new Maxwell cards today IF they had an improvement on the hash rate of a 780ti. Their latest double Titan is slower than just buying two (overpriced) titans. If NVidia waits much longer the net hashrate of altcoins will make new offerings less attractive. I would buy big Maxwell cards today if they had 'em, but I might buy nothing if they wait two more months to release.