I installed ASP.NET and Web Tools 2012.2 Update on my VS 2012 on two machines now, and when I checked Help > About Microsoft Visual Studio, they still show as
"Version 11.0.51106.01 Update 1"
and I'm wondering why it doesn't say Update 2?
"Version 11.0.51106.01 Update 1" is the version of VS2012 installed. ASP.Net and the Web Tools have their own version numbers.
Here is some info on VS20112 Updates (replacing Service Packs).