We just got this and thought it would be of help to the next CS-Cart update.
"On January 2, 2011, USPS will update domestic shipping services and international pricing and product features. For detailed information on prices and new product features, please reference the Federal Register Notice at [url]http://pe.usps.com/FederalRegisterNotices.asp#Jan_2011_Prices[/url].
For a list of the new prices, please reference the Postal Explorer website at [url]http://pe.usps.com/[/url]. The information is on the left hand side under “NEW* Jan. 2, 2011 Pricing Information”
Price Change updates will be available in the Web Tools testing environment for integrator access on or around December 13. The test environment can be accessed, using your production UserID, via the following URL scheme, host and path:
Secure APIs: [url]https://stg-secure.shippingapis.com/ShippingApi.dll[/url]
Non-secure APIs: [url]http://stg-production.shippingapis.com/ShippingApi.dll[/url]
Please note that the changes below are intended to be backwards compatible, however, may not be depending on how individual programs are integrated with the APIs. Technical guides, inclusive of the changes below, can be obtained from the USPS Internet Customer Care Center (1-800-344-7779 or icustomercare@usps.com).
Web Tools APIs will be affected in the following manner:
§ All Web Tools APIs with postage prices incorporated will be updated to reflect the price changes
§ All Rate Calculator API integrators are encouraged to migrate to the latest API versions (RateV4, IntlRateV2):
o RateV4 and IntlRateV2 will be the only Rate Calculator API versions to offer the full range of new products and functionality
o Rate, RateV2, RateV3 and IntlRate will be retired in May 2011, requiring all integrators to migrate to the latest versions
§ Domestic Rate Calculator API Changes
o New request enumerations will be added to RateV4 to support the USPS product offerings and prices listed in the Federal Register Notice
o New response nodes in Rate, RateV2, RateV3 and RateV4 to support the USPS product offerings and prices listed in the Federal Register Notice
o New optional request values in RateV4 to support USPS extra services offerings and prices
o New optional response nodes in RateV4 to support USPS extra services offerings and prices
§ International Rate Calculator API
o New response nodes in IntlRate and IntlRateV2 to support the USPS product offerings and prices listed in the Federal Register Notice
o New optional request values in IntlRateV2 to support USPS extra services offerings and prices
o New optional response nodes in IntlRateV2 to support USPS extra services offerings and prices
o New response value in IntlRate and IntlRateV2
§ Express Mail Label and Hold For Pickup Express API
o New and request data tags to support the Legal Flat Rate Box
o New , , , and request data tags
§ Delivery Confirmation and Signature Confirmation
o New and request data tags to support the USPS product offering and prices listed in the Federal Register Notice
§ International Label APIs
o New request enumerations will be added to support the USPS product offerings and prices listed in the Federal Register Notice
o New , , , , and request data tags
o New response value
§ Customs Forms CN22 and CP72
o New response value
Please contact the USPS Internet Customer Care Center with any questions or concerns at 1-800-344-7779 or icustomercare@usps.com. "