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LM340: What is the meaning of the suffix NOPB on LM340 as well as on some other IC's ?

Part Number: LM340

Currently LM340  is listed as "not to be used for new designs" and in its place is LM340A with a suffix of NOPB.  What is the meaning of "NOPB"?  So far all I have found is that NOPB was used by National Semiconductor for indication of a "Green" product for the environment. Does the current listing with the NOPB  suffix still mean a green product?