You see, Valve time makes sense because they don't want to "break promises"...SE time and Valve time can't be compared.

SE Time -

-Early Month: 1st - 12th
-Mid Month: 14-24th
-End of Month: 27-31st if applicable, carry over to first week of next month
-Soon - Example: "Summoners will get 2 new avatars soon ~ 2006."
Fast forward to 2009
"Introducing Alexander and Odin!
Fast forward 3 months
"Ok now you guys can get it!"

SE's definition of "soon" is anywhere from 2 hours to 4 years. Valve time is just 'when it's ready' lol.