The answer is: No, it's not being used much, if at all.
1. Very few players will play with White. Most are playing R/G, U/G, or mono-Black.
2. Those that play with white are either W/G (aka. Enforcer) or B/W. I haven't seen Disenchant maindeck or even in the sideboard.
3. There are very few overpowering enchantments in this format. Pernicious Deed? Compulsion? Squirrel Nest? Any others?
4. Artifacts in Standard... Err... What's an "artifact?"
NOTE: This information is based on what I have seen in my own environmet and in Net articles.