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Apple already has announced that the next version of the iPad operating system will abandon Google’s digital maps as the built-in navigation system. That shift could cause neighborhood merchants to spend less money advertising on Google.

Google’s new tablet is expected to be the first to run on the next version of Android, known as Jelly Bean. The new features in the upgraded system are expected to be previewed during the conference.

Analysts are also speculating Google that will introduce another long-rumored product, a home-entertainment system for streaming music.

Google also could provide a glimpse at a pair of Internet-connected glasses that it eventually hopes to market as a way to continuously filter and share life through the Web.