I just wanted to make my first post and chime in on this discussion, since I am also a Verizon user and found some semi-related information.
There were some people on other forums that made the assumption that Verizon would get the Lumia 550 because the 950 and 950 XL currently doesn't support CDMA or Band 13. The new FCC documents for the Lumia 550 (RM-1128) just came up today on their database [I can't post links because this is my first post]. They show that the devices only have only been tested for GSM 850/1900 WCDMA band 5, 4, 2 and LTE band 12, 17, 5, 4, 2, and 7. Therefore, the 550 will not work on a CDMA service provider.
It might also be important to note that the Lumia 550 has a Snapdragon 210 processor that theoretically can support all bands and protocols including CDMA, just like the 810 and 808 processors. The date of the SAR Compliance Test for the RM-1128 was Aug 21, 2015 and it was submitted to the FCC on Oct 20, 2015. Therefore, it seems that at least until 2 days ago, Microsoft has no plans to sell the 550 unlocked to support Verizon or Sprint (or didn't want to redo the test). Now, this doesn't mean that this will also be the case for the 950 and 950 XL, since the sales from these higher end devices would probably offfset the cost of the CDMA testing and licensing more than the 550 would. However, I was hoping to see the 550 certified for CDMA, which would give us Verizon users some hope that the 950's would be as well. It would have also been nice to see a new lower end Lumia compatible for Verizon and Sprint, for those that are interested.
So far, the FCC documents for the 950 and 950 XL still have not shown up, which I find strange, since they are to be released before the 550...