Sending out warning texts to owners may seem like an unusual step to take, but in this case RAZR owners that make use of the Verizon Wireless Mobile IM app are going to have the functionality broken by the update, so Big Red is warning you that you will need to download a new instant messaging app after the update. The text message in full reads:
Free Verizon Message: Your phone will soon be upgraded to Android 4.0. At that time we will remove your Verizon Wireless Mobile IM app because it is not supported in Android 4.0. Please download a new instant messaging app to use IM on your phone. Thank you for using Mobile IM!
So you shouldn’t have to wait much longer – with any luck you may see Ice Cream Sandwich before Android 4.1 is announced at Google I/O later this month.