Gigabit LAN Implementation

We have an existing network running on a 10/100 LAN connections 300
Desktop and 10 Data Servers it is connected on the managed switch
10/100.

Here is my questions.

If we will implement Gigabit on the server side putting a gigabit
switch connecting all the server on it then it will be then be
connected on our 10/100 VLAN switch. Will there be any improvements on
the desktop side connecting to the server considering that the gigabit
switch of the server is connected to the 10/100 managed switch wherein
all desktop switch also connected on that 10/100 VLAN switch ?