Yes. From my perspective:
WD is known for hard drives, and SSDs are a natural extension, thus I can understand WD making use of that aspect of Sandisk's portfolio.
WD is not known for smaller mobile products, such as USB flash drives, SD cards, and other mobile cards. They have the mobile hard drives, yes, but compared to other manufacturers, they've not seemed interested at all in anything smaller than a 2.5" drive.
I am curious if they intend to do WD branded everything (so we'll now have WD-branded microSD cards floating around in phones, which seems a little odd considering the brand recognition Sandisk has), if they'll keep the Sandisk name for some products, or if they'll spin certain parts of the business off.