Wodering why "Mango" beta has not served? Here's the answer;
A source inside Microsoft tell Neowin that that there was an issue with the build that was to be released this week. Apparently, the build that was to be released had a faulty upgrade script that pointed to a Microsoft Corporate file share, which wouldn't work outside the company, which inevitably caused the delay. He further says that after the delay, we should expect to see the "AppHub release within a week."
The build he tried was the 7661.WP7_5_Trial.
He also said there's a lot of uproar within the company that the company willn't be giving its employees access to Mango until it goes public to AppHub next week. The software company is now testing the working update process, and details it: "[The update process is a] Zune software update and an executable that makes some changes to the registry to get the Zune software to look at the right place for the pre-release updates. It's a series of two updates, just like Nodo."
"The only guaranteed update path from this pre-Mango to the final Mango will be to revert back to the backup made by the pre-Mango update, since carrier-approved updates will only be made to carrier-stamped versions on the phone."
For developers, there're many under the hood improvements, including "list controls now being populated and scroll in a separate thread", and all image loading in list based controls os automatically handled in the background."
He also revealed some new features that Microsoft has put under NDA:
The source said that there were many camera enhancements, one of which being a feature where if you touch the item on the screen that you want to photograph, the phone will attempt to focus on that as best it can.
In addition, there's a "phone lock delay" finally, which means you can do something similar to the iPhone where if you've a PIN set you only need to enter it every 15 minutes or another predefined interval.
Also, apparently the "audio stutters" that are found in NoDo and the RTM build have been resolved.