OMG I cant believe people are talking about WD dropping dead, how morbid.
Theres nothing wrong with his voice either, he still sounds just like the Kitt I remember, just a little deeper.
Mio`s gps has made him sound slower than usual but thats not how he really sounds, I truly believe its a pitch issue that could easily be corrected, thats apparant when listening to the pitched up version on youtube, made by a KRO member Taoworm http://uk.youtube.com/watch?v=q8FGKjRf5GU
If you listen to the Benchwarmers clip with Kitt in he obviously sounds deeper but not slow, its still Kitt.http://uk.youtube.com/watch?v=nWOt6lQIzpw
I`m sure that if he voices Kitt again in an episode from the new series it will be fine any I think any change in tone will fit rather well. Compare it to Peter Cullen voicing Optimus Prime in the cartoon and how he sounds now voiced in the 2007 CGI movie, its still Prime just with a different tone, Cullen adapted Prime to make up for this and also gave him more character.
WD has done massive amounts of voice work and is also experienced enough to do the same thing, he could adapt Kitt in the same way, after all how do we know how Kitt would feel after being mothballed for 25 years, maybe weary also disheartened for being older technology compared to KI3T, who knows? WD could adapt Ki2t to suit this perfectly.