We’ve been extremely skeptical about the prospects of an HTC ThunderBolt roll out ever since the HTC Desire HD, a device similar to the ThunderBolt, was denied its Ice Cream Sandwich update after HTC had originally promised owners that it would roll out. Unfortunately, those fears don’t appear to be too far off.

We have heard from a source that the HTC ThunderBolt Ice Cream Sandwich update is definitely in danger of not rolling out. That source says that there is currently a 95% chance that the update won’t roll out, odds that HTC ThunderBolt owners were not looking for.

There is a little bit of good news to take from this as it doesn’t appear that the idea of an HTC ThunderBolt Ice Cream Sandwich update has been shut down completely which should give owners a little bit of hope, even if the odds of a roll out are apparently thin.

The decision is apparently in the hands of HTC at this point and we assume that means that the software is currently in testing. It was the testing of ICS on the HTC Desire HD that led to the device’s Ice Cream Sandwich getting cancelled and it’s possible that HTC will deem to software unfit for the ThunderBolt as well.

This is certainly possible considering both device share similar hardware – including 768MB of RAM and a single-core processor – something that originally led us to believe that the ThunderBolt update was in danger of not rolling out at all.

Read: HTC ThunderBolt Ice Cream Sandwich Update Officially In Trouble.

Hopefully, HTC will come right out and either announce or cancel the Ice Cream Sandwich and not give ThunderBolt owners the same runaround that it gave HTC Desire HD owners when it flip flopped on whether the update would ever roll out.

So, while nothing is set in stone, it appears that the ThunderBolt’s update is definitely in trouble and while there appears to be a little hope to cling on to, owners should start preparing to either root their device or endure a permanent life on Android 2.3 Gingerbread.