Update?

I loaded all the themes onto a new site and 18 themes came up requesting updates.

Do we update or ignore these updates?
The themes requiring updates are as follows:

Arclite
You have version installed. Update to 2.02.

AutoFocus
You have version installed. Update to 1.0.1.

Black-LetterHead
You have version installed. Update to 1.5.

Bluebird
You have version installed. Update to 2.0.

Color Splash
You have version installed. Update to 1.3.2.

Deep Blue
You have version installed. Update to 1.8.

Diary-cute
You have version installed. Update to 1.8.1.

Doc
You have version installed. Update to 0.1.

Emptiness
You have version installed. Update to 1.13.3.

Fusion
You have version installed. Update to 3.1.

Gonzo Daily
You have version installed. Update to 1.4.

Grassland
You have version installed. Update to 2.0.0.

iBlog
You have version installed. Update to 3.1.2.

Journalist
You have version installed. Update to 1.9.

jQ
You have version installed. Update to 3.4.

K2
You have version installed. Update to 1.0.3.

Minimalist
You have version installed. Update to 1.

Monotone
You have version installed. Update to 1.1.