Yes, processing speed and working memory are both less-heavily weighted into the FSIQ on the WISC-V (2 out of the 7 subtests) than they were on the WISC-IV (4 out of the 10 subtests). Partly to make room for the division of PRI into VSI and FRI (trying to keep the number of core subtests down--7, reduced from 10), and partly because they really don't load as heavily onto general intelligence.

The index scores also will not translate as neatly into the FSIQ, as there will be an additional three subtests necessary to derive the five primary index scores (one more for each of the VSI, WMI, and PSI).

...pronounced like the long vowel and first letter of the alphabet...