Sprint announced on their blog that they will be unveiling an update to their Nexus S 4G. The update will include tweaks to increase data speed, Wi-Fi connectivity, speakerphone audio quality, and adds TTY support for the deaf and hard of hearing. The update will be dubbed Android 2.3.5 and will be available Monday, July 25th.

Engadget has exclusively received the update to test data speeds. As you can see in the screenshot above, speeds were improved — even enough Engadget says the speed change is noticeable.