IQ 16 SP02 will be released in Nov 2013. This release is Linux only to provide HANA functionality when their SP07 release is done on that same day.
IQ 16 SP03 will be released about one month later in Dec 2013. This is an follow-on release to SP02 for all other platforms that were not released in SP02.
The original SP03 was slated for the end of 1H 2014 (likely May/June). That should now be thought of as SP08. The SPs for IQ and HANA are trying to line up from a numbering perspective, hence the jump to SP08.