Express entry is a system that was put in place on January 1 of this year. It's been in place since that time, and the response, really, has been overwhelmingly positive. As with any new system, there have been small technical glitches, if you will, but I think those have been addressed quite quickly with zero to no impact on applicants. To date, the response has been overwhelmingly positive with the vast majority of clients finding the system easy to use.
On May 28th, 2015. See this statement in context.