As of October 1, 2015, the United States Coast Guard has implemented the use of the new CG-719 series of forms (B, C, K, K/E, P, and S) that will replace the forms displaying a June 30, 2012, expiration date.
The Coast Guard will not stock the CG-719 series of forms in paper format. These forms may be obtained electronically in a PDF fillable format on the National Maritime Center (NMC) website. Additional updates to the NMC website will occur as quickly as possible to reflect the new forms.
The Coast Guard encourages providers and applicants to purge the old forms from inventory and to begin using the new forms as soon as possible. In order to avoid penalizing mariners who have already completed their forms, the NMC will continue to accept the old forms for a period of time.
With the exception of forms K and K/E, the Coast Guard will no longer accept outdated CG-719 forms after April 1, 2016. For the K and K/E, forms signed by a physician after December 31, 2015, must be the new form version. In accordance with 46CFR10.304(d), the K or K/E must be submitted within 12 months of the date signed by a licensed medical professional, therefore, the Coast Guard will no longer accept outdated K or K/E forms after December 31, 2016.
Here is the entire announcement from the National Maritime Center