As subject, I got my receipt number through calling USCIS customer service. I am not sure when the attorney will inform me or if she would take the initiative to inform me.
Anyway I got a SRC receipt#. Here is the details:
EB2
PD: 11/05 I-140 approved at TSC
I-485 package originally mailed to NSC on 6/18/07
on 7/19/07 TSC received application and sent notice
So June filers mailed to NSC later than 6/14 should get notice as TX_Kitty predicted.
If I-140 is approved at TSC, most likely the case will be transferred to TSC again.
Cases usually won't get lost by regular certified postal mail. Patience is extremly needed.
Good luck to everybody!