I reget to infomr you rocketpig but there are no native 1080i tvs. I have one tha twas sold as such as it was a crt tube tv. Problem is crts don't have a defined resolution. My tv and most sold as such had around 800 resolvable verticle lines when professionally calibrated. Those tvs and 720P tvs acept 1080i signals but some detail is lost compared to 1080P televeisions.
Final* Word on Game Delays:
The game will not be any better or include more content then planned. Any commnets that say so are just PR hogwash to make you feel better for having to wait.
Delays are due to lack of proper resources, skill, or adequate planning by the developer.
Do be thankful that they have enough respect for you to delay the game and maintain its intended level of quality.
*naznatips is exempt
