Transfer season pass
I am getting my HR20 on Friday. Is there a way to transfer the season pass from my HR10 to the HR20?
Nope. There's no way to transfer anything to the HR20.
If you have TWP installed on the HR10, print out the SP list and note any options. Don't forget that, like the HR10, the HR20's index needs some time to populate so best to wait some hours or even a day before setting up new recordings.
Oh, and you'll probably get an HR21 unless you've explicitly insisted on an HR20 and anyone paid attention to you. If you do not use an off-the-air digital TV antenna, it doesn't matter.