Was the dip today related to the segwit lock in? People speculating on some drama to prevent lockin at this moment?
Great news nonetheless. A big step forward!
No. I believe it was traders cashing in. After a rise there's always a fall when a group of traders that bought late gets scared and starts selling. Usually it's close to round numbers like it touched 3500 and dropped again went close to 3500 and dropped. It couldn't get through it so it was a signal to test lower support. All normal and still bullish

Just a minor correction. I thought that if the bull run continue, it could be a bubble because of how the price has skyrocketed in a few days.
SegWit activation this period? YES!
Activation expected at ≈Mon, 21 Aug 2017 21:34:22 GMT.
Still 1984 blocks needed for SegWit to activate.
Activation period is at 1.6%.
https://www.xbt.eu/It was indeed locked-in today. Now waiting for the activation. I don't believed that the locked-in has an effect of the price. Maybe someone who have bought bitcoin around ~$1900 just want to cash it out. Still at $3300 it is still holding which is a good sign. But I don't know if the market will continue to be bullish at this stage. The Segwit locked-in for me is already price in.