两个标准答复还是有区别的,我多了个additional review和6个月

luckydice2012
Your case is currently under review and you should receive a decision or notice of other action within 30 days of the date of this letter.

hhhhhh
Based on your request we researched the status of this case. We are actively processing this case. However, we have to perform additional review on this case and this has caused a longer processing time. If you do not receive a decision or other notice of action from us within 6 months of this letter, please call customer service at the number provided below.