Best thing so far I have found with the update is that the streaming to the head unit is much better when controlling it, move it to next song or previous song it does it straight away rather than the seconds delay although I had the previous software due to jail breaking it.
Some towns appear to be missing, such as Stratford-upon-Avon and Solihull.
Others, like Uckfield in East Sussex, are in the wrong location. Satellite images of various locations, particularly in Scotland, are obscured by cloud.
I had noticed this when planning my route tonight when I'm off out somewhere I'm not quite familar with, that it had a few names wrong. THen looked for google maps as i thought it worked much better, and there isn't an approved ap on the store yet!
And even though it is released tomorrow, even if you have pre-ordered it, you're not guaranteed to get one. Some of those who pre-ordered might not get theirs for a couple of weeks or so.