A quick scrape of the internet shows that XT1078 could well be the model number for a Motorola....Ry is probably suggesting that this is the name of the device's model number.
I've got a Nexus 4, I've had it for about two year and it works very well.But after two years I'm looking about for an upgrade - as we do. Truth be told, other than battery life after two years of being charged, I've no real need to upgrade the Nexus 4 it runs Android 4.4.4 really nicely (Good for me!). So while I think it is a little exciting to talk about a Nexus 6, the truth is, is that unless Google release a version 5 (or a step change from Android 4) there is not the compelling reason for me to upgrade. If I buy a Samsung S5, Note 3, Sony Z2 or Oppo Find 7 etc...they'll all be shipped with 4.4, as will the Nexus 6. Great another 2 years with the same ROM.