HTC Has just Released an Official Statement about it ICS Update plans for North America users, HTC posted on its Facebook page:

We have more good news related to Android 4.0, Ice Cream Sandwich, and can confirm that upgrades are planned for Verizon Wireless customers with the HTC Rhyme, HTC Thunderbolt, and DROID Incredible 2 by HTC, as well as the already announced HTC Rezound.

In addition, the HTC Raider is on the list to receive ICS for customers of Rogers and Bell in Canada. Stay tuned for more news on Ice Cream Sandwich releases in the coming weeks.

HTC Also promised that more News about other devices to get the ICS is coming soon, So this not the Full list yet.

Check the Official Announcment