Roger Christian said:
Looking at the lightsaber in the trailer it has to be a found, older one as the blade is rougher, it's flame-like, so not as smooth as the newer blades. The snowy environment would hint that someone has found an ancient saber so I surmised this is an older laser sword. For sure there is a lot of debate going to be blogged now about the little blade protection side flames. They look cool, but aren't practical, and that was the original Star Wars mantra, everything had to look used and real. George wanted it that nothing ever stood out as designed, just a used universe that was real. So there has to be a reason coming for this laser sword. J J Abrams would have considered every visual in this first teaser.
The creator of the original lightsaber has spoken.