New USPS rules on shipping lithium primary cells?

DMM Revision: Mailings of Lithium Batteries
Effective May 16, 2012, the Postal Service™ will revise
Mailing Standards of the United States Postal Service,
Domestic Mail Manual (DMM®) section 601.10.20 to codify
that primary lithium metal or lithium alloy (nonrechargeable)
cells and batteries or secondary lithium-ion cells and batteries
(rechargeable) are prohibited when mailed internationally
or to and from an APO, FPO, or DPO location.
However, this prohibition does not apply to lithium batteries
authorized under DMM 601.10.20 when mailed within
the United States or its territories.

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