Title says it all. Havoc DH, 110. Through 8 hours of varied playing, in BfA prepatch content and legion wq, never offered Fel Eruption - Tier 6 talent. Just spent 10 minutes at a training dummy, never came up at all.

According to Icy Veins, it's equal with the other two talents on that tier, and I used it all through legion and it was offered then in part of rotation.

Not sure what other information you might want.

This does not come as a surprise, as it isn't in the T21 SimC profile (likely for good reason?), and the rotations are based off of those.

Fel Eruption is no longer worth using as a DPS rotation ability due to the significantly reduced damage in BfA.