All kidding put aside, the newest bikes are of great quality and convenience IMHO.
I have minimum trouble and go on extended trips without worry. My Madone road bike (for instance) is so light, fast, reliable, user friendly that I have trouble imagining the next major improvement.

There is such a thing as Maturity in products. For instance, Ball Bearings have not changed much in a lifetime and there are other mature products which have had only cosmetic changes.