Google I/O 2012 did not disappoint.  The search giant introduced a number of new products and services, and some upgrades to existing ones.

So before you head onto the Moscone West Convention Center on May 15-17, 2013 got Google I/O 2013, provided that you were able to snag a ticket early as the event is already sold out, here’s a quick recap at what happened at last year’s event:

Google showcased three products: the infamous Google Glass which Google co-founder proudly showed off its basic features using skydivers using the device to take photos or videos, and how lightweight the device is.  Then Google showed off two other devices: the Nexus 7 tablet that was built in collaboration with ASUS and the Google made Nexus Q which is a spherical streaming device for home entertainment.

Jelly Bean, or Android 4.1 was introduced before Google I/O but it wasn’t until the event that more details were divulged.  On JB the Home Screen panel, camera, connectivity, and notifications were all given an upgrade.  Then Google Now was introduced.  Google Now is a feature that gives you the right information when you need it.  It learns from your daily activities to give you information about train or bus schedules if you commute to work and back home everyday or give you details on a particular restaurant you’re about to dine in, and much more.

Google also updated Google+ with Calendar integrations which made events more social, as in you can create animated Google+ invites which you can send to your G+ contacts or even those who aren’t using the social networking service.  Another upgrade is a bit stalkerish as Google knows if you’re at a particular event based on your Calendar, time and location.  And because of this, users can choose to stream photos immediately with a live slideshow connected to the Calendar event.

Finally, the Google Compute Engine was introduced which is an infrastructure-as-a-service offering that enables customers to spin up Linux virtual machines with high-performance networking.  It also aimed to reduce the cost of computing down by 50 percent.

So what are we to expect in this year’s I/O event?  Will the Key Lime version of Android be revealed at the event?  Will there be more Google gadgets introduced?  Will Google+ get a redesign?  That’s just some of the questions we hope Google addresses in its upcoming event.