I haven't used Steam in over a month, so I was expecting an update as normal. What I wasn't expecting was the file description for steam.exe being changed to "Steam Client Bootstrapper (buildbot_winslave04_steam_steam_rel_client_win32@winslave04)". I normally wouldn't be curious as to what "Client Bootstrapper" meant, but when Steam updated, it downloaded a file that was around 110 MB and extracted it, so I'm a bit concerned.
(sorry if I'm this post isn't easily understandable. I'm really ♥♥♥♥ing tired at the moment)