Tom's Hardware Guide published a review on Silicon Motion SM2258 Technical Preview With Micron 3D TLC NAND A quote from the article:

The SMI SM2258 is the next small controller that will make a big impact on the entry-level and mainstream SSD market. The controller is already shipping with 2D NAND, but now it supports the new IMFT 3D NAND that will power several new SSDs.

 Silicon Motion SM2258 Technical Preview With Micron 3D TLC NAND @ Toms Hardware