Of the three Republic warships pursuing the Malevolence, the lead ship is General Skywalker's Resolute. As a flagship, it has red conning towers.
The original script had Padmé and C-3PO rushing to the battle site to aid in the evacuation of the Kaliida Shoals Med Center. The story was changed to instead have Padmé tricked into becoming Grievous' hostage.
The specialist battle droids in the hangar have reflective paint strips that resemble firefighter's uniform.
In the script, Anakin's original plan to board the Malevolence included a foolhardy hyperspace micro-jump that would have deposited the Twilight just centimeters away from the enemy ship's hull.
Grievous' greeting of "hello there" to Kenobi is a callback of Obi-Wan's "hello there" to Grievous in Episode III, which itself was a callback to Obi-Wan's "hello there" to Artoo in Episode IV.
The design of the rail-jet car draws inspiration from the Trade Federation MTT tanks from Episode I.
If you listen carefully to the disembodied rail-jet conductor voice, you'll note that it advises travelers to "mind the gap."
The final frame of the heroes is the first time all these prequel characters have ever been thus depicted; the final frame from Episode I did not have C-3PO while Episode II and III had them scattered across different planets.
