Nope. Or, at least I know I wasn't informed and it would be pretty time-consuming for the mods to do that. It really isn't difficult to figure out when you've met the criteria though, once you've been here 2 weeks just make sure you've made some useful contributions to the workshop.
Yeah you probably have enough posts by now, unless you haven't posted any reviews in the writing workshop, but no you're not notified.
I have put about half a dozen reviews in the workshop. But do all my questions and responses count as posts?
If you've done half a dozen reviews that's more than enough so long as they were actually constructive and pointed out good and bad points, and how to improve. It doesn't even have to be all that long, just so long as it's more than "that was good". If you're really unsure, you could, you know, try and make a new thread in the workshop .
It seems one minute I can post and the next I can't/ It says you may not post, I've been here long enough and while my reviewing it isn't perfect, I have tried to critque,and help people along with suggestions. Edit: doesn't matter, I can post all of a suden