Soon new Airport Express and Time Capsules?

Engadget found in the pages of the FFC, who validate electronic devices, two new references that seem to speak about new Airport Extremes and Time Capsules. Although the products do not change their dimensions, the modifications are certainly significant. In addition to the adoption of larger disks for the Time Capsules, these new products will be able to simultaneously manage the 2,4 GHz and 5 GHz bands as wifi stations of their competitors do right now.
The idea is tempting and effective. When one is able, one can connect using 802.11n (802.11a 5 GHz). The data flow is then maximum and can reach the 10 MG/s. If one moves further away, one swaps over to 802.11n (802.11g 2,4 GHz) that has a higher range but a lower maximum data flow.
This is not a revolution, but rather an interesting evolution. One can even hope that one day all our hardware will be able to manage the two wavebands and maybe even cumulate the data flow.