I noticed when the first info on Guitar Hero World Tour was released that the new guitars were larger:

These guitars are significantly larger, perhaps to mirror the the more realistic size of the Rock Band stratocasters.

Thanks to a scan of a UK Stuff Magazine article on Guitar Hero World Tour, this is now confirmed. Here’s a shot of the Les Paul guitar controller, originally introduced in Guitar Hero III, next to the new Guitar Hero World Tour.. er “unbranded” guitar controller

Definitely larger. And check out the size of that whammy bar!

One of the very few things I liked about the Rock Band Stratocaster was its much larger size. Here’s hoping the new improved stratocaster is a better controller.

Of course, we’ve got a long way to go before the fake plastic guitars are anywhere near as large — or as heavy — as real guitars.