Driveclub will still come this year according to Sony. They are still working on the game, and it's most likely a summer release. According to shops where i live here in europe it's going to be released late July, but take that with a grain of salt.
The absence of the game in the “spring” release window probably means that we can expect it in the summer at the earliest, as it’s doubtful that such a relevant first party game would launch without a few months of buildup from the announcement of the final release date. Of course I’d be very happy to be proven wrong on this, but at least now we know that we won’t have to wait for 2015.