Ive been paying close attention to Maps (especially navigation) since beta 1 and through every beta its gotten better and better. thats not to say its perfect and there are definately things that would make it more awesome but i do like. I tried out navigation on beta 4 last night and noted a few things. Maps are looking a lot better. Cleaner and sharper. Street Labels are bigger and clearer. Its a fine line with this though and could possibly become overcrowded in very built up areas. Siri still cant cope with "take me to work". I just get "Sorry i cant find a work address" even though there is one and saying "whats my work address" pulls it up. Talking of Siri. I noticed a badly sampled Chime sound playing while in siri and having a route running. Not sure what or why this was. Not sure if this is trying to alert me of turns as i have voice switched off. There were a lot more landmarks/businesses shown along the route. In all previous beta's asking for fuel along my route would give me results of petrol stations 50+ miles away. Now I get results all along the route. Sadly tho, they are general stores and not petrol stations. Siri actually calls them petrol stations. Still no night-mode yet. If anyone has figured out what the chime is, I would love to know.