Google wants to rectify that problem, not necessarily by releasing a new version of the Chromecast, but rather by selling an Ethernet adapter for the Chromecast. This will allow the dongle to have a wired network connection, in case you want to use it somewhere in your house where WiFi doesn’t reach, or simply because those 2.4GHz airwaves are getting quite congested.
The adapter has its own power supply, and will only set you back $15 in the Google Store. Unfortunately, it’s currently out of stock, with no indication of when it might be available for sale for those of you who really want to try this out. Personally, my Chromecasts work just fine over WiFi, so this necessarily isn’t for me – but I’m always glad when Google gives us options.