updated 04:07 pm EDT, Fri May 30, 2014
No new software layer coming
Apple's rumored home automation plans really involve Made-for-i certification of related accessories and appliances, sources claim. The most technological focus on Apple's part is expected to be an emphasis on easy connections via Wi-Fi, and voice control via Bluetooth. There reportedly won't be a new software layer that supersedes apps.
A number of home automation technologies already rely heavily on iOS, such as Nest's thermostats and smoke detectors. This January, Apple gave MFI certification to the Tianzun, an air conditioner built by Haier. The unit can connect to iOS devices without any special logins or registration, which may indicate a requirement of future MFi home systems.
The sources suggest that while the possibility is still open for a more elaborate platform, it won't be seen at WWDC next week. Instead the MFI certification should simply establish industry standards.