It changes fairly often, the most recent change was replacing a Miura with the F-Type. It was a hard choice but the Jaaaaag's just so gosh-darned pretty.
In case anybody doesn't know what the "Bespoke" DB5 is, its a gutted DB5 body with all new engine, tranny, suspension, everything. Top gear did a short bit on it a long long time ago (Series 6, Ep. 5, if i'm not mistaken). Here's their website. It's pretty sweet.
I know you guys keep lists too, so post them down in the comments