It's been nearly a year since Marvel Entertainment announced at SXSW 2013 that it was going to add adaptive audio to its digital comics experience, but now the dream has become a reality.

According to an article on CNET, Marvel is set to announce the changes made to the new version of its digital comics app, Marvel Unlimited, at a panel at South by Southwest Interactive in Austin, Texas.

The updated version of the app includes faster, smoother transitions between panels, the adaptive audio we've all been waiting for and Marvel AR's DVD-style extras. Of course, if you prefer a more traditional method of enjoying your comics (albeit on a screen and not on paper), you can switch all of these features off in the Options panel.

Because of the new features in the updated app, Marvel wants to entice new fans to partake in the subscription-based app with a promotion that drops the price of the first month to a $0.99. In order to take advantage of this deal, you must sign up by March 14, 2014 and use the promo code "SXSW99." After the promotional month is up, you'll have to pay $9.99 a month or $69.99 for a year to continue enjoying the subscription.

$0.99 isn't a bad price of admission in order to check out the new adaptive audio feature. CORD and Momentum are no longer on the project, replaced by Australia-based Firelight Technologies' FMOD and David Ari Leon's SoundMind Music. The adaptive audio technology can detect when you move from panel to panel and will change the background music when appropriate. It also has the ability to gauge your speed and will change the score according to your pace. Nifty. As of this writing, the adaptive audio feature is live and is only available for Captain America: The Winter Solder. Head on down to the App Store to check it out now.