Google stops Google Wave development
As stated in the official Google blog Google will discontinue Wave development(at least as an independent product). I looks like low user interest is the main reason for this decision.
We have to admin that Wave creates a new point of view on the web technologies and it is little sad that this "new wave" meet its end so quickly but I doubt that Google will completely forgot Wave. I am pretty sure that we will see many of the Wave features in the upcomming Google social network(Google Me).
Also the main parts of the code are availabe as open source so I think that there will be a lot of developers who will continue to use and improve Wave features.