Yes but if I can get the same performance in a better package... Then why not?
But also as an example, the new LW III amps have "updated circuitry that yields lower distortion (THD) for an overall cleaner output. The gain management stages have been altered to produce a higher Signal to Noise Ratio (SNR) with lower noise floor. The all new circuitry also raises the damping factor for better control, higher input impedance to avoid overworking your source unit which reduces level and lowers distortion even further. All of the new amplifiers are 10%-15% more efficient due the more intelligent power supply. This results in less current draw from your battery and less heat to dissipate via the heat sink chassis. Turn-On and Turn-Off pops are reduced due proper sequencing during start-up and shut-down. The crossover section is greatly improved for versatility and maintaining uniform slopes at all frequencies. The ground to audio ground isolation has also been improved for less engine noise problems. Rather than having speakers/subwoofers damaged by DC, a new protection circuit will automatically shut the amplifier down. We also added a direct input for the 5th channel for great control on the 5-channel model. The monoblock model has a new remote control that is much more linear throughout the adjustment range, rather than from the mid to max range only. Quite possibly the greatest improvement on all models is the higher quality MOSFET output transistors resulting in improved reliability. "
The rest of the gear I mentioned is also all new. The R1 subs, T5 woofers, new Reference series amps, RW woofers, XT series speakers, Xstream components, Picasso Limited series, XXX-10000D amp, Reference series components, the Human Reign Crypt amps have changed specs as well.
So they're not just cosmetic changes. Im mostly asking because im curious if there will be a Reference series released in the co-axials and the Picasso series amps havent been updated in a long time and im about to buy co-axials and a picasso monoblock amp. They may only be small gains or changes, but i'd rather get as much for my money as I possibly can. I see no harm in waiting a month or two to get a better product especially when the new Soundstream Reference gear that i've heard is very good stuff (reference splits, R1 subs).
Cosmetic changes as well.