Definitely increased activity, indicating positive expectancy on update...
It just shows how little volume can impact price strongly on this stock. Its now literally doubled in price from its low of 2.1c 3 weeks ago on less than 2M volume total in that time, and 1.5M in the last 3 days has pushed it from 2.7c up to a high of 4.3c.
Cheers, Sharks