Strategic move on behalf of Apple to acquire SSD controller know how. Effectively Apple is one of the top consumers of NAND devices, so it might make sense for them to go lower into the echo system of SSD, and start building their own Hard Drives for their Netbooks, Laptops, etc..
This has 3 key advantages for Apple:
1. Reduce the number of suppliers with respect to sourcing SSD and NAND based storage, effectively buy cutting out the middle man between NAND devices and SSD drives.
2. Lower overall cost to make SSD and stronger negotiation power with NAND Flash device manufacturers like Samsung and Toshiba. Gives them more leverage.
3. Develop their own SSD controller rather than have to depend on SanForce(LSI) or other controller companies and drive out the cost further from the equation. That would also lower their Risk with respect to MTBF (mean time between failure) and ECC errors. They will have better control of it using the Israeli company ECC and wear-levelling algorithms instead of depending on Joe-Shmo SSD controller to do that job.
Good Job Apple, well calculated step.