The current trend of bitcoin is that is is appreciating. The big bubbles and bursts only affect the short term trends.
Surely it will burst soon or later because at one shot prices went up more than 50% so I think there will be a correction soon.
You can't call this latest rise a bubble. Yes, we have gained nearly 50% but this ain't a bubble, especially if we know that Bitcoin was in a two year old bear trend and that the highest price was over $1,100 at the moment.
Now that rise to a $1,100 was a bubble. I would rather call current rise a recovery!