I have DirecTV (Pacific Northwest) .... Except for this forum, I've heard nothing regarding the demise of SD. My sticks and bricks has two HD-DVR's and two SD receivers in the bedrooms. The motorhome has a HD-DVR and one SD ... all are working fine. I've had no onscreen offers to switch, or snail mail asking the same question. Maybe it's a regional thing, but so far my service has been the same with no indication of switching.
I guess now I have the same question as you ... when and if what we hear is true.
If they do switch, I'll require all new equipment as what I'm using is several years old and before Wi-Fi (pre-Genie, & before streaming).
2008 HR Endeavor PDQ - Ford Edge 4 Down
FMCA F374292