According to a new report, it looks like Google is aiming to release Google Glass sometime around Google I/O 2014, which is expected to happen in May. Given the way Google handled this year's I/O, which was an actual developer's conference, with just some software update announcements, it may not be reasonable to expect the actual release announcement at I/O. But, sometime around then seems like a good bet.
Google Glass has been in beta testing for months now with developers and early adopters who were willing to drop $1500 on the device. There is still no official word on the pricing for the consumer release, but there have been rumors that Glass will eventually cost $300.