The new version of kernel now activate the device-tree standard, it means that instead of having all module activated by default with some stopped by a blacklist system, now, all are disable and activated only when described in a device tree.
Device tree details the system architecture and dependencies following configuration files. The device tree can be owned by the shield itself in an attached eprom.
As a consequence, now, i2c / spi are not activated by default. So if you need to activate it on startup. For this, edit /boot/config.txt and add line at the end like :
dtparam=i2c_arm=on # for i2c 1 dtparam=i2c_vc=on # for i2c 0 dtparam=spi=on dtparam=i2s=on dtparam=i2c_arm=on,i2c_vc=on