I-485 Approval Notice Sent

How come my status is: Approval notice sent, not: Card has been ordered?
Is there a difference, do I have to wait for the latter status before I get the green card?

所有跟帖： 

• Details: PD RD. NIW?, TSC or NSC? -xupuren- ♂ (0 bytes) () 08/04/2008 postreply 13:20:43

• GXGX! which center? -mountainbeauty- ♀ (0 bytes) () 08/04/2008 postreply 13:21:17

• 回複：I-485 Approval Notice Sent -frog10- ♂ (117 bytes) () 08/04/2008 postreply 13:27:42

• they sent approval notice and then mail card -waitGC- ♀ (0 bytes) () 08/04/2008 postreply 14:07:25

• 一般等一周到兩周綠卡就到了，但是我已經等了兩個多月了，還沒消息，據說 -daijinhua- ♀ (32 bytes) () 08/04/2008 postreply 17:13:45

• got the card today, -frog10- ♂ (52 bytes) () 08/05/2008 postreply 20:23:23