You'll get an application form in the mail. Probably worth subscribing when you get the form as you'll probably be able to sell them on market for more than cost. That might be the reason for the increase of market volume for the ordinary shares - buyers are hoping they'll be in before the 'record date' and eligible to subscribe for the options against the new shares they're buying.
The price might quite likely crash back to the old range between 5 and 6c on the ex option entitlement date. The record date and ex entitlement date have yet be announced. However if you sell shares into this spike you might miss out on eligibility for the options.
Forget the 'reset incentive window' bullsh*t - its a positive in a small way, but neither here nor there. It's just an option, giving the holder the right but not the obligation to exercise (convert to a share) at any time up till a 30 month expiry date, or to sell as an option in the share market