Google's annual I/O developers' conference is due to kick off June 25th at San Francisco's Moscone Center, but developers and fans alike will have to wait a little while longer to register their interest in attending. The search giant had planned to open a lottery for event tickets this morning, but has now pushed back that date back to April 15th.

The conference generally brings lots of new product and services announcements from Google, and tickets sell out extremely quickly. Google has opted away from its prior "first-come first-served" method to make things fairer, but explains that it's "still working to make the registration process even easier." The lottery will now run from April 15th through to April 18th, and only after it closes will tickets begin to be allocated.