This framework has been around forever and not really. Most people use the standard library unless they need better routing than the standard library provides.
There are actually very few web frameworks that provide much other than a router in Go. Most of the frameworks are actually just packages that can be used for all sorts of things. e.g. Beego by astaxie
Well I wasn't commenting on age of particular projects. I had not heard of Beego so now I still feel there is a bit of over growth. Leads to confusion over what to use when you do want better routing which I think is pretty much every project. Perhaps routing will continue to improve in the standard library such that it does not feel like I need to pick a package or roll my own.
There are actually very few web frameworks that provide much other than a router in Go. Most of the frameworks are actually just packages that can be used for all sorts of things. e.g. Beego by astaxie