Jackryan, here are the answers to your query.
Is it true that all Home Cable subscribers must move to their new digital tuner box? Is this mandatory?
Yes, once SkyCable encrypts the signal in your area, you would really need to have the digibox. SkyCable will inform you about it. By the way, Home Cable is now SkyCable Silver.
I am not so excited about it since I am sure they will jack up the subscription rates later once everyone has moved over.
Um, no, subscription rates will stay the same.
The other catch is, I need to put a digital box for each and every TV in the house right?
Yes again, but I heard the subscribers are entitled for 2 free digibox per household, the 3rd one will cost between 1500 and 2000 pesos. Though, I don't know if the 2nd free digibox is a promo and when it will last.