[amsat-bb] what's flying that does packet

I may be going on an extended adventure which will take me far from the usual communications facilities of phone, internet, or even regular postal mail. This pretty much leaves HF and SAT as my options for messaging and communication with the outside world. As far as SATs go, what's presently flying or near term planned for launch that will serve as a message relay for nts type messages?

Thanks,

Eric AF6EP