I recalling reading a post here that someone mentioned we will get the new UI for the Z when the firmware update comes out when they release the new line. If true, does any one know when they are planning to come out with this firmware update?

Understand it will likely be a paid upgrade that includes the upgraded maps for this year. It likely will not be a free update. We do not know for sure but the announcement for the upgrade for 110 owners will likely come at or just after the announcement of the Z120BT.