OK, here's my latest scoop.
I called and talked to yet another rep.
She said starting around June or July of 2006 they will have the new HD DVRs available. If you currently have a HD10-250 they will offer you an upgrade for "probably" around $100. That will include the new HD DVR receiver and a new dish that will be required and all installation. She said "probably" because they do not have a firm amount at this time but around $100 is what she has been told.
Should you choose not to upgrade the HR10-250 will work fine with "current" HD programming "probably" thru 2007.
Based on what she said I went ahead an put my order back on. Since I already have the triple LNB I talked her into throwning in the OTA anteanna for free.
I told her that come this summer if I need to pay $200 or more to upgrade I'm going to call asking for her by name and raising hell.

She said not to worry, they will take care of me.