Every season or two there is a new theme being pushed by the industry. Next season's big buzz/trend is skis is toward "lightweight" ski construction. There have been some notable design trends along this line for the last couple of years, but get ready, because almost every major manufacturer is "all in" going forward. Kind of fun on the retail sales floor to hand a customer a "lightweight" ski, as say "Feel how light these are... Isn't that awesome!". The most fondled skis on my ski wall are the Volkl V-Werks Katana (super lightweight, fat ski, built with carbon fiber, paulownia wood, etc.), everyone marvels at how light they are. But... what does that lightweight really mean, as far as, on snow performance?
Yes, they are easier to carry from the parking lot to the slope, exert less force on your legs riding up the chairlift, easier to tour with for backcountry/AT activities. What is the other benefits? I fail to see many for the average resort skier, I am a big guy (#230), and ski pretty fast, and there are very few "light" skis that I enjoy skiing. In general, these lightweight wonder skis, lack stability, precision, edge grip, and well, pretty much everything. Give me a solid wood core and two sheets of metal every single time. It might be fine in soft snow or powder, but, on packed snow conditions or crud (which are the majority of what we all ski), super light skis are more of a handicap than a benefit to most skiers.
Next year, Rossignol will have no skis with waist widths between 76mm and 100mm with metal in their construction. Wow! (not in a good way)
AT and backcountry is driving this trend, and it is a growing segment in the ski industry, but is still pretty tiny in terms of overall market share.
Like always, the herd will stampede too far in one direction for a season or two before it self corrects.