Upcoming changes to the USPS API - MarketPress

One of the sellers on my MarketPress network sent me this information. Are we affected by these changes?

Web Tools Customer;

January 26 USPS Web Tools Update: USPS Web Tools will be implementing changes and additional features to the U.S. Postal Service APIs listed below effective January 26, 2014 with testing available January 13th. Detailed release notes are available on the USPS Web Tools home page here.

If you are a merchant using a 3rd party ecommerce or shipping software, please ensure that your IT professional is aware of the upcoming changes.

The following APIs will be modified and/or enhanced beginning January 26:
Domestic Label Retired APIs:

Rate API Updates:
RateV3 API
RateV4 API
InternationalRateV2 API

Domestic Label API Updates:
ExpressMailLabel API
HoldforPickupExpress Label API
eVS Label API
DeliveryConfirmation V2, V3, V4 APIs
SignatureConfirmation V3, V4 APIs
Priority Mail Open and Distribute API (OpenDistributePriorityV2)
Priority Mail Hold for Pickup API (HoldForPickupPriority)
First Class Mail Hold for Pickup API (HoldForPickupFirstClass)
Merchandise Return Service API (MerchandiseReturnV2,V3, V4)

International Label API Updates
Priority Mail Express International Label API (ExpressMainIntl)
Priority Mail International Label API (PriorityMailIntl)
First Class Mail International Label API (FirstClassMailIntl)
2976 Custom Form API (CN22V2)

Other API Updates:
Track and Confirm APIs (Track, TrackV2)
Address Verification API (GetAddress)

You will find the January Release Notes under the Web Tools Announcements Section at USPS.com here. Please Follow us on twitter at @USPSWebTools for updates or contact the Web Tools team directly at WebTools@usps.gov with any questions or concerns.

Take care,

Ben Burgess