I doubt VERY seriously if Icon will get Glance. Given that Nokia Tech Support states that the screen on the Icon is "not compatible" with Glance and Nokia is the developer of Glance, seems to stongly suggest that we will NOT be getting it. Unless Nokia develops a "newer version" of Glance specifically for the Icon, don't go looking for it. The Icon will DEFINITELY be getting the WP8.1 update. In fact, I'm already running the WP8.1 Developer Preview. There are a few bugs that need adjusting, but for the most part, I'm rockin it! Verizon is just as anxious to get the final release distributed as we are to get it, but they are waiting for Nokia to release the software to them and then Verizon will need to test it on their network before releasing it to us. I'm guessing sometime in June/July time frame. Nokia hasn't released it to Verizon yet because Nokia and Microsoft are still working out a few bugs and Nokia hasn't completed the firmware upgrade to Cyan yet. Once all this is done, we should be getting a very high quality upgrade. Worth the wait if you don't want to Developer Preview your Icon at this point.
UPDATE: It's now July 29th and Verizon received the update from Microsoft and Nokia on July 15th. That's two weeks of testing so far. It should NOT take more than one more week to test this!