Hi, what information would you need to be available to these events? 

If you have an immediate requirement then there is an option which might or might not be useful to you.

Download the vm version from codeplex called Teensyduino Alpha. This is a standard arduino 1.0.3 plugin for VS but includes some additional support for the teensy board properties.

In the teensy board properties you will see the facility to run your own post build event exe, vm passes the upload params and build path to the exe as args[] when it runs.

The post build event does not interfere with the upload and runs after compile.

Another alternative that some users have been clever with is the "tools>options>compile>show build path" property. Switch this on to see a build path in the compiler output window. CTRL+CLICK the build path to see the build files in an explorer shell window. This allows you to use normal windows shell shortcuts to assign right click options that allow "batch files" to run that perform various functions with the elf or hex output from the build.