How can I test Wordpress 4.1 for stability?

How could I test (suggest me the test techniques, or what to test) if the latest version of Wordpress (4.1) is stable for building a company presentation website?

this is more like a kind of assignment, not something real that I have to conduct.

my initial thoughts: the platform is already released, so I would suggest making "domain testing", testing for boundaries and testing for high loads on the system... what do you guys think?

thank you!