Sadly, like force feedback, it'll be years before we'll ever see a new and improved product like the Powerglove or P5 in all of its glory on the market. Sun owns the rights to glove based controls and there's no effort on anybodies part to market the fiberoptic version.
It's a shame that the P5 never caught on. Too expensive I suppose. It did work fairly well though, when the developers didn't require too big of motions. It worked better than the PG anyway.