Google Maps for Symbian gets v4.1 update; Now has Voice Search:Google Maps for Symbian S60 (V3 and V5) has received an update to version 4.1.

The new update now allows you to search by voice, just like the Google Search app (for S60). Just hold down the green button and say what you want it to search for. Also in this new version are also minor updates to the Settings menu and a new ‘Report a problem’ function.

Here’s a bit of the blog post from the Google Mobile Blog :
Search by voice lets you easily search for anything by simply speaking your search terms instead of typing them. Just open Google Maps, press your phone’s “call” button, and clearly speak your search term like “Park Plaza.” Search by voice works with all the kinds of searches Google Maps for mobile already supports, including places, addresses (1600 Amphitheatre Parkway), specific businesses (The French Laundry), or types of businesses (sushi restaurants new york).
To get the update, Navigate over to m.Google.com/Maps on your Symbian S60 device and download the update.

there is some language selection as well but tested and most of the place in malaysia fail lol..